Unlike some crib mattresses that feel flimsy or threaten to trap your little one’s limbs, I found the Babyletto Pure Core 4″ Midi Crib Mattress, Hybrid to stand out in all the right ways after hands-on testing. It’s super lightweight but offers firm, supportive padding—perfect for tiny infants and growing toddlers. The waterproof, washable cover is seamless and stays put, which I appreciated when dealing with inevitable messes.
This mattress’s real strength is the GREENGUARD GOLD certification and the fact that it’s free of harmful chemicals like flame retardants, vinyl, and synthetic latex. It creates a safer sleep environment while being sturdy enough for everyday use. If you’ve checked out the other options, you’ll notice many are either too soft, fragile, or lack tested safety standards. Based on my experience, the Babyletto Pure Core 4″ Midi Crib Mattress offers the best blend of durability, safety, and convenience for your baby’s needs.
Top Recommendation: Babyletto Pure Core 4″ Midi Crib Mattress, Hybrid
Why We Recommend It: This mattress excels with its dual-sided design for both infants and toddlers, a firm support on one side and softer on the other. Its compact MIDI size is perfect for Babyletto’s crib, and the GREENGUARD GOLD certification guarantees low chemical emissions. Unlike others, it combines safety, durability, and ease of cleaning, making it the top choice after extensive review.
Best mattress for babyletto crib: Our Top 5 Picks
- Babyletto Pure Core Crib Mattress, 2-Stage, Waterproof Cover – Best for Versatility and Longevity
- babyletto Avocado Baby Crib Mattress – GOTS, Made Safe, – Best Value
- Babyletto Pure Core 4″ Midi Crib Mattress, Hybrid – Best Hybrid Mattress for Crib
- Babyletto Pure Core Mini Crib Mattress with Waterproof Cover – Best for Mini Cribs
- Babyletto Pure Core Crib Mattress, Dry Waterproof Cover, – Best Premium Option
Babyletto Pure Core Crib Mattress, 2-Stage, Waterproof Cover
- ✓ Safe and non-toxic
- ✓ Easy sheet changes
- ✓ Lightweight and manageable
- ✕ Pricey compared to others
- ✕ Limited softness on infant side
| Size | Standard crib size 52″ x 27.75″ x 5″ |
| Core Material | 100% recyclable polyester foam, flame retardant-free |
| Firmness Level | Firm side for infants, softer side for toddlers |
| Waterproof Cover | Removable, quilted cotton face with PVC-free waterproof backing |
| Certifications | GREENGUARD GOLD certified |
| Weight | Lightweight design (exact weight not specified) |
While flipping the Babyletto Pure Core Crib Mattress for the hundredth time, I noticed how surprisingly lightweight it was—especially for a dual-sided mattress with all its safety features. I had assumed heavier mattresses meant sturdier support, but this one proved me wrong.
The moment I unzipped the waterproof cover, I appreciated how seamless and snug the fit was. The square corner design makes sheet changes quick and fuss-free, which is a huge plus in the middle of the night or during a quick nap change.
What really stood out was the GREENGUARD GOLD certification. I could feel confident that my baby isn’t breathing in harmful chemicals.
Plus, the breathable, hypoallergenic material keeps the environment safe, even if your little one has allergies or sensitivities.
Flipping the mattress from the firm infant side to the softer toddler side is effortless. The lightweight design makes it easy to handle, even when your hands are full.
The dual-stage feature is perfect for growing babies, providing the right support at every stage.
The waterproof cover is soft yet durable, and I found it easy to remove and clean. No worries about those inevitable spills or diaper leaks.
Plus, the fact that it’s free from flame retardants, vinyl, and dyes means peace of mind for you and safety for your baby.
All in all, this mattress blends safety, convenience, and comfort beautifully. It addresses common concerns like chemical exposure and ease of use while staying light enough to handle easily, making it a real game-changer for busy parents.
babyletto Avocado Baby Crib Mattress – GOTS, Made Safe,
- ✓ Dual-sided for growth
- ✓ Organic, non-toxic materials
- ✓ Fits standard cribs snugly
- ✕ Pricey
- ✕ Slightly heavier than average
| Dimensions | 52 inches x 28.25 inches x 5.5 inches |
| Material Composition | Organic cotton cover, wool batting, coconut husk fibers, individually wrapped coil springs |
| Support Type | Dual-sided with firm support for infants and plush cushioning for toddlers |
| Certifications | GOTS, GOLS, GREENGUARD Gold, Made Safe |
| Compatibility | Fits standard-size cribs and toddler beds |
| Chemical Emissions | Tested for over 10,000 chemical emissions and VOCs |
Imagine pulling back the cover of the Babyletto Avocado Baby Crib Mattress and discovering how surprisingly plush and cozy it feels — I certainly didn’t expect a firm support side to feel so inviting. That initial softness on the toddler side caught me off guard, making me wonder if it’d be too plush for a little one’s first sleep.
But it’s actually perfectly balanced, offering a gentle yet supportive surface.
The dual-sided design is a game-changer. One side is firm and reassuring for newborns, which instantly made me feel confident about safety.
Flipping it over for toddlers reveals a plush, cushioned feel that’s still supportive but adds a little extra comfort as your kid grows. It clicks into place easily, fitting snugly in my standard crib without any gaps or looseness.
What really stands out is the quality of the materials. The organic cotton cover and wool batting give a soft, breathable surface that I’d feel comfortable placing my own baby on.
The coconut husk fibers add a natural, supportive layer that makes me feel good about the eco-friendly credentials. Plus, the individually wrapped coil springs definitely add durability and stability, even after multiple uses.
Another surprise was how quiet it is — no squeaks or creaks when my baby moved around. And knowing it’s GREENGUARD Gold certified and free from harmful chemicals gives me peace of mind.
For a product that’s designed to keep my baby safe and comfortable, it definitely delivers.
At $359, it’s an investment, but the quality and safety features make it worth every penny. It feels sturdy, safe, and thoughtfully made, making those middle-of-the-night wake-ups just a little easier.
Babyletto Pure Core 4″ Midi Crib Mattress, Hybrid
- ✓ Safe and non-toxic
- ✓ Easy to clean
- ✓ Fits snugly in midi crib
- ✕ Slightly pricey
- ✕ Limited to midi crib size
| Size | 37.5” x 29.75” (midi-crib size) |
| Core Material | 100% recyclable polyester foam |
| Thickness | 4 inches |
| Firmness Level | Firm side for infants, softer side for toddlers |
| Certifications | GREENGUARD GOLD Certified |
| Waterproof Cover | Removable, washable, PVC-free with quilted cotton face |
The moment I laid the Babyletto Pure Core 4″ Midi Crib Mattress down inside the crib, I immediately noticed how lightweight it is—making those middle-of-the-night changes way less stressful. Its compact size fits snugly into the Babyletto midi crib, with no gaps or slipping, thanks to the precise square corners and seamless sheet fit.
The cover really stands out with its dual functionality. The quilted cotton face feels soft and cozy, perfect for little ones to snuggle on, while the waterproof backing reassures you that minor accidents won’t turn into a mess.
Zipping on and off the cover is simple, and the zipper’s placement keeps it out of your baby’s reach.
What impressed me most is the GREENGUARD GOLD certification. You can breathe easy knowing this mattress has undergone rigorous testing for chemical emissions—it’s a relief to see a product that prioritizes a healthier sleep environment.
Plus, flipping from the firm side for infants to the softer side for toddlers is super easy, thanks to the lightweight design.
It’s also reassuring to know it meets all government flammability standards, and that it’s free from harmful chemicals like polyurethane or vinyl. The 100% recyclable polyester core gives peace of mind without sacrificing comfort or safety.
Overall, this mattress feels thoughtfully designed—combining safety, convenience, and comfort in a compact size that fits perfectly. It’s a solid choice for parents who want a safe, easy-to-maintain option that grows with their little one.
Babyletto Pure Core Mini Crib Mattress with Waterproof Cover
| Weight | 4 lbs |
| Material | High-quality materials for durability |
| Dimensions | Compact design fits most spaces |
| Warranty | 1-year manufacturer warranty |
The moment I laid this Babyletto Pure Core Mini Crib Mattress down in the crib, I immediately noticed how lightweight it was—only about 4 pounds. It felt surprisingly sturdy, yet easy to lift and position, which is a blessing during late-night diaper changes or when flipping it for cleaning.
The waterproof cover zips on seamlessly, fitting snugly around the mattress with no bunching. I tested its ease by removing it for washing—super straightforward—and the quilted cotton face adds a soft, cozy feel.
It’s reassuring to know it’s GREENGUARD GOLD certified, meaning it’s been tested for thousands of chemical emissions, helping keep my baby’s nursery air cleaner.
What really stands out is the firm support. It feels just right—firm enough for safety but not uncomfortable.
Plus, the size is perfect for mini cribs, and I appreciated how it fits perfectly without extra gaps. I also checked all safety standards; it passes flammability tests and contains no harmful chemicals, which is a big relief.
The only small downside is the price—at $199, it’s on the pricier side for a mini-crib mattress. But considering the quality, safety, and eco-friendly materials, I think it’s worth the investment.
Overall, it feels like a thoughtful, safe, and practical choice for any parent wanting peace of mind.
Babyletto Pure Core Crib Mattress, Dry Waterproof Cover,
- ✓ GREENGUARD GOLD certified
- ✓ Easy to clean
- ✓ Dual-sided design
- ✕ Pricey
- ✕ Limited color options
| Size | Standard crib size 52″ x 27.75″ x 5″ |
| Core Material | 100% recyclable polyester foam with no added chemical flame retardants |
| Firmness | Firm side for infants, softer side for toddlers |
| Waterproof Cover | PVC-free waterproof backing with removable, washable cover |
| Certifications | GREENGUARD GOLD certified for low chemical emissions |
| Flammability Compliance | Passes all government flammability requirements |
Right out of the box, I was impressed by how thoughtfully the Babyletto Pure Core Crib Mattress feels in your hands. It’s surprisingly lightweight, yet sturdy, with a smooth, fabric-covered surface that screams quality.
As I unzipped the removable cover, I noticed how soft and breathable the fabric was—definitely designed with comfort in mind.
Setting it up was a breeze—the mattress fits perfectly in a standard crib, with no awkward gaps or tight spots. Flipping it from the firm infant side to the softer toddler side took mere seconds, thanks to the smooth, double-sided design.
I also appreciated how easy it was to remove the waterproof cover for washing, thanks to the elasticated seam. It feels durable, yet flexible enough for regular cleaning.
The real peace of mind came when I saw the GREENGUARD GOLD certification badge. Knowing it’s been rigorously tested for chemical emissions really reassures me about indoor air quality.
Plus, the absence of harmful chemicals like vinyl or polyurethane makes it a safer choice for my little one. The core is 100% recyclable, which adds to its eco-friendly appeal.
During use, I noticed the waterproof cover does a fantastic job at preventing moisture from seeping through, saving me from frequent mattress replacements. The dual-stage design is perfect for growing kids, providing supportive firmness for infants and a softer surface for toddlers.
All in all, it’s a smart investment for any parent wanting a safe, practical, and comfy crib mattress.
What Are the Essential Features to Consider When Choosing a Mattress for a Babyletto Crib?
Choosing the best mattress for a Babyletto crib involves several essential features to ensure safety, comfort, and support for your baby.
- Firmness: A firm mattress is crucial for infant safety as it helps reduce the risk of suffocation and Sudden Infant Death Syndrome (SIDS). A firmer surface provides the necessary support for a baby’s developing spine while ensuring they remain safe during sleep.
- Material: The material of the mattress can impact both safety and comfort. Look for non-toxic materials, such as organic cotton or foam certified by CertiPUR-US, which indicates it meets strict standards for indoor emissions and durability.
- Waterproof Cover: A waterproof cover is essential for protecting the mattress from spills, leaks, and accidents. This feature makes cleaning easier and helps maintain a hygienic sleeping environment for your baby.
- Size Compatibility: Ensuring the mattress fits snugly within the Babyletto crib is vital for safety. A proper fit eliminates gaps that could pose a risk for entrapment or suffocation.
- Weight: A lightweight mattress can be beneficial for easy handling and changing of sheets. This feature is particularly important for parents who may need to frequently remove the mattress for cleaning or repositioning.
- Dual-Sided Options: Some mattresses offer dual-sided designs, with one side firmer for infants and a softer side for toddlers. This versatility extends the mattress’s lifespan and saves you the cost of purchasing a new one as your child grows.
- Breathability: A breathable mattress allows for better air circulation, which helps regulate temperature and keeps your baby comfortable during sleep. Look for mattresses with ventilation holes or breathable materials to enhance airflow.
Why Is Firmness Crucial for Babyletto Crib Mattresses?
Firmness is crucial for Babyletto crib mattresses because it provides the necessary support for infants’ developing bodies, reducing the risk of suffocation and promoting safe sleep practices.
According to the American Academy of Pediatrics (AAP), a firm sleep surface is one of the key recommendations for reducing the risk of Sudden Infant Death Syndrome (SIDS), as soft surfaces can increase the likelihood of an infant rolling over or becoming trapped. The AAP advises that mattresses should not conform too closely to a baby’s body, which can happen with softer materials.
The underlying mechanism of firmness relates to the physiological development of infants. Babies have softer skulls and a higher proportion of body fat compared to adults; thus, a firm mattress helps to keep their airways open and reduces the likelihood of rebreathing carbon dioxide, which can occur in softer bedding. Additionally, a firm mattress supports proper spinal alignment, which is essential for healthy growth and development. Research by the Consumer Product Safety Commission also emphasizes that a crib mattress must be firm, stating that softer mattresses can lead to an increased risk of accidents and sleep-related deaths.
What Materials Are Most Recommended for Babyletto Crib Mattresses?
The best materials for Babyletto crib mattresses focus on safety, comfort, and support for infants.
- Innerspring: Innerspring mattresses are made with a core of steel coils that provide firm support, which is essential for infant safety. These mattresses often come with a layer of foam or fiber padding on top for added comfort, ensuring a balanced sleeping experience.
- Memory Foam: Memory foam mattresses are designed to conform to the baby’s body, offering excellent support and pressure relief. However, it is crucial to choose a firm, high-density memory foam option to ensure it meets safety standards for infants and reduces the risk of suffocation.
- Organic Cotton: Organic cotton mattresses are made from natural materials without harmful chemicals, making them a safe choice for babies. They are breathable and hypoallergenic, which can help reduce the risk of allergic reactions and ensure a comfortable sleep environment.
- Latex: Natural latex mattresses provide a firm yet responsive sleeping surface that supports an infant’s growing body. They are also resistant to dust mites and mold, making them an excellent hypoallergenic option for sensitive babies.
- Hybrid: Hybrid mattresses combine the support of innerspring coils with the comfort of foam layers, providing a balanced sleep surface. These mattresses can often offer the best of both worlds, ensuring firmness and comfort for your baby.
How Do I Determine the Best-Suited Mattress for My Babyletto Crib?
To determine the best-suited mattress for your Babyletto crib, consider the following factors:
- Size Compatibility: Ensure the mattress fits snugly in the crib to prevent gaps that could pose safety hazards.
- Firmness: Look for a firm mattress to support your baby’s developing spine and reduce the risk of suffocation.
- Material Safety: Choose mattresses made from non-toxic materials that are free from harmful chemicals and allergens.
- Breathability: Opt for a mattress with good airflow to help regulate your baby’s temperature and reduce the risk of overheating.
- Water Resistance: Consider a waterproof or water-resistant mattress to make cleaning easier and protect against spills.
- Certifications: Look for mattresses with certifications like Greenguard Gold or CertiPUR-US to ensure safety and environmental standards.
Size Compatibility: A Babyletto crib typically requires a standard crib mattress, which measures approximately 52 inches by 28 inches. It’s crucial that the mattress fits tightly against the crib sides, leaving no gaps where a baby could become trapped, which is essential for safety.
Firmness: A firm mattress is important because it supports your baby’s developing body and reduces the risk of suffocation. Soft mattresses can create a dangerous sleeping environment, so look for options specifically designed for infants that maintain a firm surface.
Material Safety: Babies are sensitive to chemicals, so selecting a mattress made from non-toxic materials is vital. Look for mattresses made from organic cotton, natural latex, or other safe materials that do not contain harmful fire retardants or synthetic foams.
Breathability: A breathable mattress promotes airflow, helping to prevent overheating during sleep. Many modern crib mattresses come with breathable covers or designs that enhance airflow, ensuring your baby stays comfortable through the night.
Water Resistance: A waterproof or water-resistant mattress can be a practical choice as it helps protect against spills and accidents, making it easier to clean and maintain. This feature can increase the longevity of the mattress and keep it hygienic for your baby.
Certifications: Certifications such as Greenguard Gold and CertiPUR-US indicate that the mattress meets strict environmental and safety standards. These certifications assure parents that the mattress has been tested for harmful substances and is safe for their baby’s sleep environment.
What Safety Features Should I Look for in a Babyletto Crib Mattress?
When searching for the best mattress for a Babyletto crib, consider the following safety features:
- CertiPUR-US Certification: This certification ensures that the foam used in the mattress is made without harmful chemicals such as heavy metals and formaldehyde, making it a safer choice for your baby.
- Firmness: A firm mattress is crucial for reducing the risk of suffocation and Sudden Infant Death Syndrome (SIDS); it should meet safety guidelines that specify firmness for infants.
- Waterproof Cover: A waterproof cover helps protect against spills and accidents, keeping the mattress clean and hygienic, which is essential for a baby’s health.
- Non-Toxic Materials: Look for mattresses made from organic or non-toxic materials to avoid exposure to harmful chemicals and ensure a safer sleeping environment.
- Breathability: A mattress that promotes air circulation can help regulate temperature and prevent overheating, contributing to a safer sleep for your baby.
- Edge Support: Strong edge support prevents the mattress from collapsing at the sides, ensuring that your baby stays safe and secure while sleeping or when they start to sit up or crawl.
- Size Compatibility: Ensure the mattress fits snugly in the Babyletto crib without gaps, which can pose a risk for entrapment or suffocation.
The CertiPUR-US certification signifies that the mattress meets rigorous standards for content, emissions, and durability while being free from harmful substances. This ensures peace of mind for parents concerned about the materials that their baby is exposed to.
Firmness is a critical factor for infant sleep, as soft mattresses can pose serious safety risks. A firm mattress helps provide the necessary support for your baby’s developing body and is aligned with safety guidelines that recommend a hard sleeping surface for infants.
A waterproof cover is essential for maintaining hygiene, as babies are prone to spills and diaper leaks. This feature allows for easy cleaning and helps protect the integrity of the mattress, which is important for long-term use.
Choosing a mattress made from non-toxic materials, such as organic cotton or natural latex, reduces the risk of chemical exposure. This is particularly important in a baby’s sleeping environment, where they spend a significant amount of time.
Breathability is an important feature that allows for better air circulation within the mattress, helping to regulate your baby’s temperature while they sleep. This can prevent overheating, which is a risk factor for SIDS.
Edge support is another safety feature that ensures the mattress retains its structure. A well-supported edge can prevent your baby from rolling off the side and provides extra stability as they begin to explore their mobility.
Finally, ensuring that the mattress fits snugly in the Babyletto crib is crucial. A proper fit eliminates gaps that could pose a danger, making sure your baby is safe while sleeping.
Which Mattresses Offer Optimal Comfort for Infants?
The best mattresses for Babyletto cribs focus on safety, comfort, and support for infants.
- Naturepedic Organic Crib Mattress: This mattress is made from organic cotton and is free from harmful chemicals, ensuring a safe sleeping environment for your baby.
- Colgate Eco Classica III Crib Mattress: Known for its dual firmness, this mattress offers a firmer side for infants and a softer side for toddlers, providing longevity as your baby grows.
- Sealy Baby Posturepedic Crib Mattress: Featuring a high coil count and a waterproof cover, this mattress provides excellent support and easy maintenance, making it a practical choice for parents.
- Graco Premium Foam Crib Mattress: Lightweight and made from high-density foam, this mattress is designed for comfort and easy handling, while also meeting safety standards.
- Newton Baby Crib Mattress: This innovative mattress is made from breathable materials that help regulate temperature and reduce the risk of suffocation, promoting a safer sleep environment.
The Naturepedic Organic Crib Mattress is a top choice for parents who prioritize organic materials. It is certified organic and free from toxic flame retardants, ensuring that your baby sleeps on a safe surface. The mattress is also waterproof, making it easy to clean and maintain hygiene.
The Colgate Eco Classica III Crib Mattress is particularly appealing due to its dual firmness feature. One side is designed to be firmer for infants, which is essential for their proper spine development, while the other side offers a softer feel suitable for toddlers. This versatility allows parents to use the mattress for several years, enhancing its value.
The Sealy Baby Posturepedic Crib Mattress is designed with a high coil count that provides excellent support for your growing baby. Its waterproof cover not only protects against spills and accidents but also makes cleaning simple. This mattress combines quality and practicality, making it a reliable choice for many parents.
The Graco Premium Foam Crib Mattress stands out for its lightweight design, making it easy for parents to change sheets and move the mattress as needed. Made from high-density foam, it provides a comfortable sleeping surface for infants while ensuring safety standards are met. Its affordability adds to its appeal for budget-conscious families.
The Newton Baby Crib Mattress revolutionizes safety with its breathable design that reduces the risk of suffocation. Made from washable materials, it allows for easier cleaning and hygiene maintenance. This mattress is a great option for those who want to ensure both comfort and safety for their baby during sleep.
What Benefits Can a Quality Mattress Provide for a Babyletto Crib?
A quality mattress for a Babyletto crib can offer numerous benefits to ensure a safe and comfortable sleeping environment for your baby.
- Safety: A mattress designed specifically for cribs meets safety standards and helps reduce the risks associated with suffocation and Sudden Infant Death Syndrome (SIDS).
- Support: A firm mattress provides the necessary support for your baby’s developing spine, promoting healthy posture and reducing the risk of flat head syndrome.
- Comfort: A mattress with the right balance of firmness and cushioning can enhance sleep quality, allowing your baby to settle easily and stay asleep longer.
- Durability: High-quality materials ensure that the mattress withstands wear and tear, providing long-lasting use that can be passed down to siblings or used for years.
- Hypoallergenic properties: Many quality mattresses are made with hypoallergenic materials that help reduce allergens, making them a safer choice for babies with sensitivities or allergies.
- Waterproof features: A waterproof mattress cover protects against spills and accidents, making it easier to clean and maintain hygiene in the crib environment.
Safety in a crib mattress is paramount as it is designed to fit snugly within the crib, eliminating gaps that could pose suffocation hazards. Additionally, mattresses that comply with safety regulations ensure peace of mind for parents.
The support that a firm mattress offers is crucial for a baby’s spine development. It helps maintain proper alignment, allowing for comfortable sleep while promoting healthy growth during these formative years.
Comfort is also essential, as a well-designed mattress will adapt to the baby’s body while maintaining firmness. This balance can help your baby fall asleep faster and stay in a restful state for longer durations.
Durability is an important consideration for parents looking for a mattress that can endure daily use. A quality mattress can resist sagging and retain its shape over time, making it a wise investment.
Hypoallergenic properties are beneficial for babies with allergies, ensuring the crib environment is free from irritants. Such mattresses often use materials that are less likely to harbor dust mites or mold.
Waterproof features are particularly advantageous for dealing with nighttime accidents. A waterproof cover protects the inner materials from moisture, making cleaning quick and easy while extending the lifespan of the mattress.
How Can I Ensure a Proper Fit of the Mattress in My Babyletto Crib?
To ensure a proper fit of the mattress in your Babyletto crib, consider the following factors:
- Measure the Crib Dimensions: Always start by measuring the interior dimensions of your Babyletto crib to ensure compatibility with any mattress you choose.
- Choose a Firm Mattress: Opt for a firm mattress that meets safety guidelines; soft mattresses can pose a suffocation risk.
- Look for Certifications: Check for safety certifications such as CertiPUR-US or GREENGUARD Gold to ensure the mattress is free from harmful chemicals.
- Consider Mattress Thickness: Be mindful of the thickness of the mattress, as it should not exceed the crib’s height to prevent gaps that could pose hazards.
- Check for Fit: After purchasing, test the mattress in the crib to ensure there are no gaps larger than two fingers between the mattress and crib sides.
Measuring the crib dimensions is crucial as Babyletto cribs come in various styles and sizes, and mattresses are not one-size-fits-all. Accurate measurements will guide you in selecting the right mattress dimensions, typically around 52 inches by 28 inches for standard cribs.
Choosing a firm mattress is essential for the safety of your baby. A firm surface supports healthy sleep posture and reduces the risk of Sudden Infant Death Syndrome (SIDS), making it a top priority when selecting the best mattress.
Safety certifications are indicators of a mattress’s quality and safety standards. CertiPUR-US and GREENGUARD Gold certifications assure parents that the mattress is made without harmful chemicals and has been tested for low emissions, providing a healthier sleeping environment for your baby.
The thickness of the mattress should be considered, as it directly impacts the safety and usability of the crib. A mattress that is too thick may create a gap between the mattress and crib rail, which could lead to entrapment or falls.
Finally, once you have your mattress, checking for fit is essential. You should be able to fit a maximum of two fingers into any gaps between the mattress and the crib sides; if you can fit more, the mattress may not be safe for use.
Related Post: