The Serta Perfect Sleeper Changing Pad Comfort Topper has a layer of memory foam for extra comfort when baby is being changed. The cover is waterproof, wipeable and PVC free. It enhances any standard changing pad or can be used for on the go diaper changes. Product Features: Layer of memory foam for extra comfort Waterproof and wipeable PVC Free Can be used alone or with any standard changing pad Foam Topper measures 12" x 31"