Seller comments: Great at protecting mattress from leaks. Easy to put on and easy to wash. Saved us a lot in the early days when baby was in bassinet. Soft protector and fits well. - 2 pack waterproof protective covers for standard 36" x 18" cradle or bassinet mattresses - Ultra soft, breathable surface made of 100% viscose derived from bamboo - Noiseless, no "crinkling" plastic feel—quiet for baby sleep - Helps keep your baby warmer in winter and cooler in summer by wicking moisture away - Durable and machine washable for easy care; holds up well after cleaning - Neatly stitched with 360° elastic band for secure fit - OEKO-TEX STANDARD 100 certified for safer chemicals - Lifetime guarantee by Biloban