Serta SleepTrue Sparkling Sky 5" Dual-Sided Crib & Toddler Mattress - Sustainably Sourced Fiber Core - Waterproof - Lightweight - GREENGUARD Gold Certified - 5 Year Warranty

True standard size which fit snugly in our two different cribs from two manufacturers. It's a lighter weight than our other crazy expensive “breathable” crib mattress, but I think it will hold up fine. That said, our grandkids are on the small side and don't tend to be rowdy jumpers—unless the newest 3 babies break the pattern! I'll try to update this review as this mattress gets more use.

Please don't forget to tap the free Angi assembly. I did and couldn't get it after the purchase. I noticed it 1 min after order and was too late. Even after talking to both Walmart and Angi rep. So I had to pay some one to assemble it. Looks great, sturdy granddaughter loves it for her newborn on the way.

Product is simply amazing. It was so easy to assemble and our son absolutely adores it to anybody transitioning from getting their kid to sit in their big boy bed and stay in it. Here's your item.

I'm using this in my foster kitten room so I can be on the floor to play with them. It is firm and comfortable. It would be good for a baby too!

I was looking for a crib mattress and I am so glad I went with this one. Great mattress for the price

I purchased it for my grandkids and they love it. My grandson particularly came and told me he liked it so much that he stayed in his bed all night. He usually get up and come to my bed, he's 6 years old

It's one hard foam. Too hard for me but I think it works for my 1.5 yr old. When he stands up, he doesn't sink in since it isn't spring. A slight bigger than previous mattress. The previous fitted sheets fit but extra tight. Doesn't look like they would snap off even though the corner of sheets isn't exactly on the corner, more like it's on top of mattress. Hope that makes sense. Over all it works. Not too bad of a price for the brand Serta

It's a mattress it's ok, I've only had it for my daughter for a week and there's already a sagging dent on the side where she gets in and out of bed

At first this mattress was great but it decompressed after 2 months of use. Now it is flat and is floppy in 3 places. It might as well had been a disposable mattress as I'm already looking for a replacement. As someone who use to manage a baby furniture department at a baby store and highly recommend Serta baby mattress to customers, I'm so disappointed in the lack of quality Serta has now.

I thought this was a 2-stage mattress; where I expected one side was for infant which would be firmer and the other side for toddler which would have been softer. The description "dual" was misleading. I'm returning it.