"4 LAYERS OF GREAT MATERIAL --- Super soft fleece surface for ultimate comfortable; Super absorbent high density middle layer; Breathable waterproof PUL inner layer; 100% polyester knitting fabric with anti-slip silica gel bottom. Keep your pet dry and healthy at all times, Absorb most of the bad smell and give you a house with clear air.SUPER ABSORPTION AND ODOR CONTROL: Thickened high-density water-absorbing layer can lock more water, prevent extravasation of urine, and ensure dry protection at night.5 PACK: There are 5 pads in one package, which is cost-effective. Each pad measures 12"" * 12"", mainly suitable for small guinea pig, hamster, rat, hedgehog, ferrets and other similar sized small pet. Safe, efficient, and sanitary way to keep your small pets cage clean.EASY TO CLEAN & FAST DRY --- This pad is durable, long lasting, machine washable. Even becoming dirty, it can be washing durability to reuse, which could reduce the use of disposable pads and protect the environment while saving money. Made of brushed polyester, it could dry faster than other materials."