Wildkin's Out of this World Rest Mat Cover in Blue adds extra comfort, protection, and fun to your child's vinyl rest mat. The pillow case style construction makes it easy to slip over your mat, and the sewn-in flap keeps your mat securely inside. The super soft 100% cotton cover provides protection for the entire mat and is machine washable, making it effortless to clean! Fits vinyl rest mats up to 48 inches.