Polyester.ABSORBENT - high density inner layer and breathable waterproof PUL, no leak through or smell.The soft material provides a comfortable environment for puppies, and the upper absorbent material quickly absorbs pet urine.keep puppies dry all the night.FUNCTIONAL- Reusable, anti-Slip and waterproof. There are a great deal of anti-slip silica gels on the bottom side of the fabric. The leak-proof, slip resistant backing will help keep your floors dry while staying in place.MULTI-USE - Perfect for dog kennel & dog crates for large dogs, training puppies pee in playpen or assisting incontinence elderly, as whelping pads & incontinence bed pads & waterproof floor mat for pets. They are ideal for protecting carpet, wood floor, furniture, sofa, car seats during travel.EASY TO CARE - Guaranteed absorbency for up to 300+ washes, which is fully machine washable, tumble dry, no bleaching, do not iron.WARM REMINDER - Please DO NOT USE fabric softener, bleach or dry clean these reusable pee pad<br> Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement. Sold by-DIMEANI official store