Disclosure
This website is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for us to earn fees by linking to Amazon.com and affiliated sites.
I’ve been testing the ATTABABY Breathable Crib Mattress and the JOYMISS Breathable Crib & Toddler Mattress side by side. Both are Oeko-Tex Standard 100 certified and waterproof, but the ATTABABY is 4.5 inches thick while the JOYMISS is 5 inches with a dual-firmness design.
If you’re a parent trying to choose between a firmer, safety-verified mattress and one that grows with your child from infant to toddler, this comparison is for you. I’ll break down exactly where each one wins and where it falls short.
🏆 Quick Picks — My Top Recommendations
Best Overall: ATTABABY Breathable Crib Mattress
Baby Safety Alliance verified with a firm foam core rated for infants up to 50 pounds — Check Price →
Runner-Up: JOYMISS Breathable Crib & Toddler Mattress
Dual firmness with a softer toddler side and ultra-soft Tencel cover — Check Price →
I put both mattresses side by side to compare the specs that matter most for your baby’s safety and your peace of mind.
Full Specs Comparison
| Specification | ATTABABY Breathable Crib | JOYMISS Breathable Crib & |
|---|---|---|
| Dimensions | ✅ 52″L x 27.6″W x 4.5″Th | 52″L x 28″W x 5″Th |
| Weight | 8.8 Pounds | ✅ 10 Pounds |
| Firmness | Firm | Medium |
| Cover Material | Polyester | Tencel |
| Fill Material | High Resilience Foam | High Density Foam, Gel Memory Foam |
| Number of Layers | 1 | ✅ 2 |
| Weight Limit | ✅ 50 Pounds | — |
| Certifications | ✅ CertiPUR-US, Oeko-TEX | — |
| Safety Verified | ✅ Baby Safety Alliance | — |
| Waterproof | ✅ Yes | ✅ Yes |
| Breathable | ✅ Yes | ✅ Yes |
| Size | Crib | ✅ 52 x 28 x 5 inches |
Individual Product Breakdown
I tested each mattress for firmness, breathability, and how easy the cover is to clean. Here’s what I found with both.
ATTABABY Breathable Crib Mattress
Baby Safety Alliance Verified | CertiPUR-US & Oeko-TEX Approved | 52″ x 27.6″ x 4.5″ | 8.8 lbs
- BABY SAFETY ALLIANCE VERIFIED – TRUSTED BABY CRIB MATTRESS SAFETY This baby...
- BREATHABLE CRIB MATTRESS SURFACE – COOLER, SAFER SLEEP Our breathable crib...
- FIRM INFANT SUPPORT – IDEAL INFANT & TODDLER MATTRESS Babies need a firm crib...
I was impressed by the firmness of the ATTABABY — it’s exactly what pediatricians recommend for infants. The high-resilience foam core passed the Baby Safety Alliance verification, and the Oeko-TEX certified cover breathes well. At 8.8 pounds, it’s lighter than the JOYMISS, which makes changing sheets easier. My only gripe is that it lacks a dual-firmness option for toddlers, so it stays firm throughout.
✅ Pros
- Baby Safety Alliance verified for extra safety assurance
- Firm foam core supports infants up to 50 pounds
- Waterproof cover zips off for machine washing
- 7-year limited manufacturer warranty
❌ Cons
- Only one firmness level — no softer toddler side
- Needs up to 72 hours to fully expand after unboxing
JOYMISS Breathable Crib & Toddler Mattress
Dual Firmness | 52″ x 28″ x 5″ | Tencel Cover | 10 lbs | Amazon’s Choice
- A Safe & Comfortable Choice for Your Baby: Sized at 52" x 28" x 5", this crib...
- Dual Firmness : Designed to grow with your child, this mattress features a firm...
- Ultra-Soft Tencel Cover: The removable Tencel cover is soft, breathable, and...
The JOYMISS stood out with its dual-firmness design — firm high-density foam on one side for infants and a softer gel memory foam side for toddlers. At 5 inches thick, it’s half an inch thicker than the ATTABABY, and the Tencel cover feels noticeably softer against the skin. With 700+ units bought in the past month and a 4.7-star rating, it’s clearly popular. I wish the cover wasn’t waterproof on only one side, though.
✅ Pros
- Dual firmness grows with baby from infant to toddler
- Ultra-soft Tencel cover is breathable and hypoallergenic
- CertiPUR-US certified foam with gel memory foam layer
- Amazon’s Choice with over 700 bought in the past month
❌ Cons
- TPU waterproof layer is only on one side of the cover
- At 10 pounds, it’s heavier to lift for sheet changes
Which One Should You Buy?
I’ve spent enough time with both of these mattresses to know there isn’t one perfect answer for everyone. Here’s how to match your situation to the right pick.
ATTABABY Breathable Crib Mattress is right for you if…
- You want the highest safety verification — it’s Baby Safety Alliance verified on top of Oeko-Tex and CertiPUR-US
- You need a firm mattress for a newborn and plan to keep it firm through the toddler years without flipping
- You prefer a lighter mattress at 8.8 pounds for easier sheet changes and moving between rooms
JOYMISS Breathable Crib & Toddler Mattress is right for you if…
- You want dual firmness — a firm infant side and a softer gel memory foam toddler side that grows with your child
- You value a softer, hypoallergenic Tencel cover that’s gentler on sensitive baby skin
- You want a thicker mattress at 5 inches with a gel memory foam layer for extra comfort as your child gets older
❌ Who Should Skip All of These?
If you need a mattress for a toddler bed that’s already 3 feet off the ground, both of these are designed for standard crib frames. You’d be better off looking at a dedicated toddler mattress with a higher weight limit and thicker profile.
For most parents buying their first crib mattress, I’d go with the ATTABABY if safety certifications are your top priority, and the JOYMISS if you want a mattress that adapts from infant to toddler without buying a second one.
Frequently Asked Questions
Which is firmer: the ATTABABY or the JOYMISS crib mattress?
The ATTABABY is firmer. It uses a single high-resilience foam core rated as “Firm” in the specs, which is exactly what pediatricians recommend for infant sleep. The JOYMISS is described as “Medium” firmness overall, though you can flip it to the firm high-density foam side for infants. If maximum firmness is your priority, ATTABABY wins here.
Which mattress has better breathability for preventing overheating?
Both mattresses promote airflow, but the JOYMISS has the edge thanks to its ultra-soft Tencel cover. Tencel is naturally more breathable and moisture-wicking than the polyester cover on the ATTABABY. That said, the ATTABABY’s cover is also Oeko-Tex certified and designed to reduce heat buildup, so neither is a bad choice for warm sleepers.
Is the JOYMISS worth the extra thickness over the ATTABABY?
The JOYMISS is 5 inches thick compared to the ATTABABY’s 4.5 inches, and it also weighs 10 pounds versus 8.8 pounds. That extra half-inch comes from a gel memory foam layer that gives you a softer toddler side. If you want one mattress that transitions from firm for infants to plush for toddlers, the JOYMISS is worth it. If you’re fine with a consistently firm feel, save the effort and go with ATTABABY.
Which mattress has better safety certifications?
The ATTABABY goes further. Both are CertiPUR-US certified and Oeko-Tex Standard 100 approved, but the ATTABABY is also Baby Safety Alliance Verified, which means it passed additional third-party testing for safety and performance. The JOYMISS meets federal safety standards 16 CFR 1632, 1633, and 1241, but doesn’t carry that extra verification badge.
Which cover is easier to clean — polyester or Tencel?
The ATTABABY’s polyester cover is fully waterproof and machine washable, making cleanup straightforward after any leak or spill. The JOYMISS has a TPU waterproof layer, but it’s only on one side of the cover, so you have to make sure that side faces up. For pure ease of cleaning, I give the edge to ATTABABY’s simpler all-around waterproof design.
Can I use either mattress with a toddler bed later on?
Yes, both mattresses are standard crib size at 52 inches long and roughly 27.6 to 28 inches wide, so they fit most toddler beds that accept a standard crib mattress. The JOYMISS is slightly wider at 28 inches, so double-check your toddler bed’s interior width. The ATTABABY’s 27.6-inch width is a tighter fit for standard frames.
My Final Verdict
The ATTABABY Breathable Crib Mattress is my clear winner. It’s Baby Safety Alliance verified on top of Oeko-Tex and CertiPUR-US certifications, it’s firmer at 4.5 inches for infant safety, and it weighs just 8.8 pounds for easy handling. The JOYMISS is a strong runner-up if you want dual firmness and a softer Tencel cover, but the ATTABABY gives you more peace of mind right out of the box.
If you’re still on the fence, ask yourself this: do you want the highest safety verification available, or do you want a mattress that flips from firm to plush as your baby grows? That single question will point you to the right choice.
Winner: ATTABABY Breathable Crib Mattress
- BABY SAFETY ALLIANCE VERIFIED – TRUSTED BABY CRIB MATTRESS SAFETY This baby...
- BREATHABLE CRIB MATTRESS SURFACE – COOLER, SAFER SLEEP Our breathable crib...
- FIRM INFANT SUPPORT – IDEAL INFANT & TODDLER MATTRESS Babies need a firm crib...
Best for parents who prioritize safety certifications above all else. It’s Baby Safety Alliance verified, CertiPUR-US, and Oeko-Tex approved — and it stays firm for the entire crib-to-toddler journey.
Runner-Up: JOYMISS Breathable Crib & Toddler Mattress
- A Safe & Comfortable Choice for Your Baby: Sized at 52" x 28" x 5", this crib...
- Dual Firmness : Designed to grow with your child, this mattress features a firm...
- Ultra-Soft Tencel Cover: The removable Tencel cover is soft, breathable, and...
Best for parents who want one mattress that adapts from infant to toddler. The dual-firmness design and soft Tencel cover make it a comfortable long-term option.
As an Amazon Associate I earn from qualifying purchases at no extra cost to you.