GREAT MATERIAL OF 4 LAYERS: 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. . MACHINE WASHABLE:Our guinea pig cage liner is specially designed and can be cleaned with a washing machine. There is no need to clean dirty things by hand. Add vinegar as needed, to help minimize odor. . SUPER ABSORPTION AND ODER CONTROL: Thickened high-density water-absorbing layer can lock more water, prevent extravasation of urine, and ensure dry protection at night. . 2 PACK: There are 2 pads in one package, which is cost-effective and convenient to replace when one of them is cleaned. Each pad measures 60CM * 45CM, mainly suitable for small and medium guinea pig cage. . MULTI-PURPOSE & TOP QUALITY: Be popular with Guinea pig, Rat , Hamster , Hedgehog ,Chinchillas,Ferrets,Bunny,Rabbit etc.Safe, efficient, and sanitary way to keep your small pets cage clean. .