4 inch Size Memory Foam Crib Mattress & Toddler Bed Mattress, Fits Standard Full Size (52"x 28"), White - Walmart.com
Amazon.com: Crib Mattress Protector Pad Waterproof, Toddler Machine Washable & Dryer Fit Baby Bed Mattress Protector (Standard Size 52” x 28”) : Home & Kitchen