A Crib Sheet You’ll Love to the Moon & Back - Transport Your Little One To A Land of Magic And Wonder. Designed by parents, the super soft JumpOff Jo Crib Sheet is lovingly made from 100% cotton to be gentle on your baby’s skin. Featuring original illustrations and designs, our crib sheet fits all standard-size crib mattresses, designed with extra-deep corners for the most secure fit. The colorful and illustrative designs will be an adorable addition to any baby boy, baby girl or gender neutral nursery or bedroom. Fabric Care Details: 100% cotton, machine wash cold with like colors, tumble dry low, cool iron if needed. 100% Parent Approved - Crib sheet bedding designed by parents, the hypoallergenic JumpOff Jo Crib Sheet is made of 100% cotton, for a softer and more breathable crib sheet for your baby boy or girl.