Vinyl, Memory Foam

Sersper Memory Foam Baby Crib Mattress and Toddler Mattress, CertiPUR-US - 52"*27.5"*6"

6 inch Crib Mattress, Baby Crib Mattress and Toddler Mattress, Breathable Waterproof and MovableCover - 52"*27.5"*6"

Safety1st Pleasant Dreams White Crib and Toddler Bed Mattress

BeautySleep Spring Grove Crib and Toddler Mattress by Beautyrest

Crib Mattress with Washable Cover,Dual Sided Baby Crib Mattress &Infant Toddler Mattress, Water Proof Mattress

Serta Nightstar™ Glow Crib & Toddler Mattress