The Complete Guide To Buying A Crib Mattress
10 minute read
August 4, 2025
The Complete Guide To Buying A Crib Mattress
When it comes to your baby's sleep, there’s nothing more important than the quality of their mattress. Given that infants sleep up to 18 hours a day, selecting the right crib mattress is a decision that deserves careful thought. After all, your baby’s comfort and safety are paramount. In this guide, we’ll walk you through the essential parameters to consider before buying a crib mattress for your baby's nursery - ensuring that your little one rests peacefully every night.
1. The Right Size
When it comes to buying a crib mattress, size matters. Ensuring that the mattress fits snugly into the crib is the first step to guaranteeing your baby's safety. According to crib manufacturer guidelines, the mattress should be no more than 6 inches thick and should measure at least 27 ¼ x 51 ⅝ inches.
Tip: When checking the fit, be sure that there’s no more than a two-finger gap between the mattress and the crib sides. A snug fit prevents your baby from getting their arms or legs stuck between the mattress and the crib, keeping them safe while they sleep.
Our Pick:
Dream On Me Twilight Innerspring Crib and Toddler Mattress
Features: 88 interwoven coils, waterproof cover, Greenguard Gold certified.
2. Firmness
Firmness is one of the most important considerations when selecting a crib mattress. A mattress that's too soft can increase the risk of suffocation and SIDS (Sudden Infant Death Syndrome). It’s essential to provide your baby with a firm, safe surface to sleep on.
The Hand Press Test is a simple way to assess a mattress's firmness:
- Press your hand into the center and sides of the mattress.
- Take your hand off and check if there’s any depression left.
- If the mattress quickly returns to its original shape, it’s firm enough. If it leaves a mark or doesn’t bounce back, it’s too soft for your infant.
Our Pick:
Evolur Sleep Comfort Plus Classic 150 Coil Inner Spring Crib and Toddler Mattress
Features: 150 heavy-duty interlocking coils, dual-sided for infant and toddler, Greenguard Gold certified.
3. Types of Crib Mattresses
Crib mattresses come in three main types: foam, spring, and fiber. Each offers distinct benefits, and the best choice for you will depend on your needs, preferences, and budget.
Foam Mattresses
Foam mattresses are lightweight and affordable, making them easy to move and clean. Many eco-friendly options are available, offering peace of mind that your baby is sleeping on a non-toxic surface.
| Pros | Cons |
|---|---|
| Lightweight and easy to clean | May lose shape over time |
| Eco-friendly options available | Some lack edge support, which could create gaps in the crib |
Product Featured - Dream On Me 2-In-1 Breathable 3" Spring Coil Portable/Mini Crib Mattress
Our Pick:
Dream On Me 2-In-1 Breathable 3" Spring Coil Portable Crib Mattress
Features: Lightweight, waterproof cover, hypoallergenic
Spring or Coil Mattresses
Spring mattresses are known for their durability and strong support. They’re a good choice for parents looking for long-term value.
| Pros | Cons |
|---|---|
| Great support and durability | Heavier and more expensive |
| Excellent edge support | Requires more frequent sheet changes |
Product Featured - Evolur Comfort Balance Plus Supreme 260 Coil Inner Spring Crib & Toddler Mattress
Our Pick:
Evolur Sleep Comfort Balance Plus Supreme 260 Coil Inner Spring Crib and Toddler Mattress
Features: 260 heavy-duty coils, dual-sided for infant and toddler, Greenguard Gold certified.
Fiber Mattresses
Fiber mattresses, such as those made from coconut coir, are becoming increasingly popular due to their breathability and natural moisture resistance.
| Pros | Cons |
|---|---|
| Natural, breathable, and moisture-resistant | Heavier than foam |
| Eco-friendly options like coconut fiber | Not as durable as innerspring mattresses |
Our Pick:
Dream On Me Asheville 4” Firm Fiber Crib & Toddler Mattress
Features: Eco-fiber core, dual-sided for infant and toddler, waterproof binding, Greenguard Gold certified.
4. Certifications to Look For
When shopping for a crib mattress, it’s essential to ensure it meets safety standards. Certifications like Greenguard Gold and Baby Safety Alliance Verified guarantee that the mattress has been tested for harmful chemicals and pollutants.
- Greenguard Gold Certification ensures the mattress has been tested for over 10,000 chemicals and harmful VOCs (volatile organic compounds).
- Baby Safety Alliance Verified certifies that the mattress complies with safety guidelines to keep your baby safe from day one.
Product Featured - Dream On Me Breathable Orthopedic Extra Firm Crib & Toddler Mattress, Blue/White
Our Pick:
Dream On Me Breathable Orthopedic Extra Firm Crib and Toddler Mattress
Features: Greenguard Gold and Baby Safety Alliance Verified, reversible design, waterproof cover.
5. Waterproof Covering
Accidents are inevitable with babies, so a waterproof mattress cover is a must. Many crib mattresses come with built-in waterproof features, or you can buy a separate cover to protect the mattress from spills and accidents.
Our Pick:
Evolur Comfort Cool Flow Foam Crib and Toddler Mattress
Features: Waterproof cover, breathable foam, Greenguard Gold certified.
6. Other Important Features to Consider
- Dual-Sided: Many crib mattresses are reversible, with a firmer infant side and a cushioned toddler side. This feature allows you to keep the mattress as your baby grows, providing comfort and support at every stage.
- Flammability: Check if the mattress passes flammability tests and ensure it’s free from chemical-based fire retardants.
- Hypoallergenic & Non-Toxic: Choosing a mattress made from hypoallergenic, non-toxic materials is essential for your baby’s health and safety.
- Made in the USA: Mattresses made in the USA are subject to stricter safety regulations, giving you peace of mind that the product meets the highest standards.
Product Featured- Evolur Sleep Comfort Lite Plus with Natural Eucalyptus Fiber Crib and Toddler Mattress
Our pick:
Evolur Sleep Comfort Lite Plus Crib and Toddler Mattress
Features: Dual-sided, hypoallergenic, Greenguard Gold certified.
FAQS:
1. What should I look for when buying a crib mattress?
When buying a crib mattress, prioritize size, firmness, material, and safety certifications. Ensure the mattress fits snugly in the crib without any gaps. Choose a firm mattress to reduce the risk of suffocation and SIDS. Look for eco-friendly and hypoallergenic options, such as Greenguard Gold certified products, to ensure your baby’s safety.
2. How do I know if the crib mattress is firm enough?
Use the Hand Press Test to check firmness. Press your hand into the mattress and release. If the mattress quickly returns to its original shape without leaving a depression, it’s firm enough. If it leaves a mark or doesn’t bounce back, it’s too soft for your baby.
3. Can I use a crib mattress for both infants and toddlers?
Yes! Many crib mattresses are dual-sided, offering a firmer side for infants and a cushioned side for toddlers. This feature allows the mattress to grow with your baby, providing comfort and support at every stage. Look for mattresses with this dual functionality for long-term use.
4. How important is it to get a mattress with a waterproof cover?
A waterproof cover is crucial to protect the mattress from spills, accidents, and leaks. Many crib mattresses come with a built-in waterproof cover, or you can purchase a separate cover to keep the mattress clean and hygienic. It’s an essential feature for maintaining the longevity of the mattress.
5. Are Greenguard Gold certified mattresses safer for my baby?
Yes! Greenguard Gold certification means the mattress has been tested for over 10,000 chemicals and harmful VOCs (volatile organic compounds), ensuring it’s free of toxic substances. This certification is vital for ensuring your baby’s sleep environment is safe and healthy.
Ready to Choose?
Choosing the right crib mattress is an important decision, one that will affect your baby’s comfort and safety. With the right information and a focus on safety, you can find a mattress that works for you and your baby’s needs.
At Ever & Ever, we believe in providing parents with the best products to support your parenting journey. Explore our curated selection of Dream On Me and Evolur crib mattresses and create a safe, cozy sleep environment for your little one.
Shop MattressSuggested For You
The Chicago Baby Shower Guide Nobody Had When We Were Planning Ours
Planning a baby shower in Chicago comes with plenty of possibilities, from intimate gatherings at home to stylish celebrations at neighborhood venues. Whether you're planning for a first-time parent or keeping things simple for a growing family, here's a guide to the Chicago-specific details that can make planning easier, more personal, and a lot less stressful.
Read more
The Most Overrated (and Underrated) Items on Every Baby Registry
Every parent wants a baby registry that covers the essentials without filling the nursery with products that barely get used. Yet with endless "must-have" lists online, it's easy to overspend on trendy gadgets while overlooking items you'll rely on every single day. Before you click "Add to Registry," here's how to separate the baby gear you'll truly use from the products you may be better off skipping.
Read more
The Subway Stroller Checklist: 6 Features That Matter More Than You'd Think
City parenting comes with its own set of challenges—stairs, crowded platforms, narrow sidewalks, elevators that aren't always working, and public transportation. Whether you're riding the subway every day or simply exploring a busy downtown, the right stroller can make every outing smoother. Here's a practical checklist of six stroller features that matter far more than most parents realize.
Read more
5 Nursery Color Palettes That Aren't White or Beige
White and beige nurseries have dominated Pinterest for years—but they're no longer the only option. In 2026, parents are embracing richer earth tones, muted greens, warm woods, and soft blues that create calming, timeless spaces without sacrificing personality. Here are five nursery color palettes that feel fresh, modern, and designed to grow with your child.
Read more
First Mother’s Day? Here’s How to Make It Truly Memorable
A first Mother’s Day is different from any other. It’s quieter, more emotional, and deeply meaningful. Whether you’re celebrating yourself or honoring a new mom in your life, this guide shares heartfelt ways to make her first Mother’s Day feel personal, supported, and truly unforgettable.
Read more
Summer Nursery Design Trends 2026: Warm Tones, Airy Spaces & Aesthetic Setups
Designing a nursery in summer 2026 is about more than aesthetics, it’s about creating a space that feels light, breathable, safe, and emotionally grounding for both baby and parents. From sun-washed color palettes to thoughtfully chosen furniture that supports safe sleep for newborns, this season’s nurseries are evolving into serene, adaptable spaces that grow with your family, without sacrificing style.
Read more
Baby Registry Guide – Best Baby Shower Registry Ideas for 2026
Creating the ultimate baby registry is one of the most exciting—and at times overwhelming—tasks for expectant parents. Whether it's your first baby or you're growing your family, a baby registry is a must-have to get the essentials you need and to make the baby shower gift-giving experience simpler for everyone involved. In this Ever & Ever guide, we’ll break down everything you need to know to create the best baby registry for 2026!
Read more
