Extensive Application and Perfect Fit: Our 38" x 25" waterproof pack n play fitted sheets, which is up to 5'' deep, will be securely compatible with most pack n play mattress, playard mattress or mini crib mattress since they have a fitted stretch skirt which is made from elasticized fabric. Highest Quality: These cotton pack n play fitted sheets are made from cotton which will surely let your baby enjoy the soft, smooth and comfortable environment when sleeping or playing in the playard. Eco-friendly, Durable: The cotton mini crib sheets are produced under stringent environmental standard, so you can enjoy your time while your little one sleeps in mini crib or plays in the playard. 100% Waterproof and Machine Washable: The backing layer of pack n play sheets protects mattress from any water spills or bed-wetting. Besides, our pack n play sheets set is machine washable and dryer friendly. Biloban Life-time Guarantee: Biloban's quality you can trust. If our pack and play sheets does not meet your needs for any reason, replacement or money back, no question asked!