All in one, Waterproof Crib Sheet / Toddler Bed Sheet and Crib Mattress Pad Cover Our Waterproof crib sheet is lined throughout with Eco-friendly TPU especially designed with no seams to prevent leakage, so no mattress pad cover, mattress liner or crib mattress protector is necessary. Clean up is a breeze and your crib and toddler mattress are fully protected. Soft and Breathy:100% Jersey Cotton Our Crib Sheet Sets are composed of light, soft and breathable fabric. Made from 100% high quality Jersey knit cotton, babies and toddlers love our Crib sheets, as they offer a soft, welcoming texture that lulls them into restful sleep. Fits Multiple Mattress Sizes Our exceptional product fits all standard mattresses sold Cribs, and Toddler Beds, enabling a great fit on any sized mattresses. Our uniquely designed sheet set is equipped with flexible, generous elastic, easily covering your mattress while simultaneously offering a tight seal, enabling a great fit on multiple sized mattresses. Adaptable Elasticity: