The organic velour natural portable/mini crib sheet fits standard size 24" X 38" portable/mini crib mattresses. These soft and c ounce y cradle sheets are free of any pesticides and ideal for baby"s sensitive skin.The 5" deep pockets with elastic provide a secure smooth fit. Top layer organic velour cotton, back layer 80% cotton, 20% polyester. Available in natural and mocha. Can be machine washed cold with like colors, mild detergent, gentle cycle. Do not use Bleach. For best results tumble dry low.