Waterproof Material: Both upper and sole are made of by high density waterproof durable dustproof fabric, washable and reusable for floor& carpet protection. Washable & Reusable: They are washable by both machine and hand, you can use it for many times, furthermore this fabric is easy to clean. Non-slip Sole & noise reduction: The thickened sole is coated with rubberized bumps so the covers become non-slip. It provides superior grip and comfort. The floors and carpets are well protected at the same time. The boots cover also reduces the noise of foot stepping. Wide Application: Great choice for contractors, house cleaner, mowing and other service providers to use in the show houses, garage, dust-free workshops, offices, museums, labs and etc. You may also use them to wrap your shoes to put in the luggage for travel. Size and package: Suitable for shoe size approx. 31cm/ 12.2inch in length, 12.5cm/4.9 inch. Suitable for thicker boots and big shoes.