80% Polyester DURABLE AND WASHABLE - High-Quality microfiber material, helps to absorb dust and hair, very practical and durable. EASY TO USE - With paste design, easy to attach to your mop, great for replacing mop heads for spray and spin magic mop. Mop pad each piece about 18.5" x 6.3", Suit for 18" flat mop base. EFFECTIVE - Wide and thick microfiber pad reaches deep into cracks and crevices to pick up more dirt than traditional sponge mops. GOOD ABSORPTION - Good water absorption performance, help the floor dry faster. AMAZING REUSABILITY - After using this mop pad, put it in the washing machine for cleaning. When it dries, you will get an almost new one.