ACORN Women's Polar MOC Slipper 100% Polyester Synthetic sole Soft and warm fleece uppers fully lined in cozy microfleece that wicks moisture Lofty Acorn memory foam midsole over comfort cushion layer of featherweight EVA guarantees total comfort and therapy for feet Durable suede sidewall Non-slip weatherproof outsole for indoor/outdoor wear Hand wash cold and air dry, or machine wash cold, gentle and air dry.