

🌟 Sleep smart, grow strong — the crib mattress that evolves with your baby!
The Sealy Baby Flex Cool 2-Stage Crib Mattress features a breathable cotton cover with an airflow pocket, 204 premium steel coils for targeted support, and a dual-sided design that transitions from firm infant comfort to cozy toddler softness. GREENGUARD Gold certified and PVC-free waterproof, it ensures a safe, non-toxic sleep environment. Proudly made in the USA with durable steel edges and corner pillars, this 52x28 inch mattress fits standard cribs and toddler beds, offering parents peace of mind and babies the best in comfort and safety.
























| Best Sellers Rank | #4,829 in Baby ( See Top 100 in Baby ) #19 in Crib Mattresses |
| Brand | SEALY BABY |
| Cover Material | Cotton |
| Customer Reviews | 4.6 out of 5 stars 2,979 Reviews |
| Item Firmness Description | Firm |
| Product Dimensions | 52"L x 28"W x 5.75"Th |
| Size | Crib |
| Top Style | Tight Top |
D**N
Great baby gift
This is a very good mattress and fit perfectly in the baby bed.
S**Y
Great investment for quality baby sleep
Highly recommend this crib mattress! Comfortable for little one, breathable, and easy to change sheets on. It’s got a decent weight to it, so I feel assured my little one will have good support. No shrinkage with daily use so far.
A**R
Love!
Great mattress! Fits perfectly into our crib, no sinking or noise! Both babies have this mattress in their cribs!
J**Z
Also good for cats
Added the crib sheets and before we could put it in the crib, it was already being tested. The baby also loved it. It’s firm but soft and thick. Seems like good quality thus far.
C**S
Not as waterproof as I thought it would be
I thought this mattress was good value for the money we needed a good mattress quick for our toddler and it is a good cheaper option. It was labeled to be waterproof but the material soaks ip liquids and leaves stains from said liquids even with a mattress cover which bummed me out. I pull have preferred a material of the mattress to be something you could wipe with disinfectant wipes. It was easy to set up but I don't agree with it being waterproof.
R**.
Worth every penny!
Fantastic crib mattress. It feels so comfortable and I notice that my son sleeps much better on it than his old one.
S**R
Crib mattress
I bought this for my grandsons crib. It fit very well and was soft enough. Very light weight.
C**W
Impressed with comfort
Using this cool matress in fl with a toddler bed. Child sleeps really well on it, and even mom likes it and says it's very comfortable when it's snuggle time right before bedtime. 5 star purchase for us, worth the Xtra money to go with this mattress.
Trustpilot
3 weeks ago
1 month ago