Anti-slip Design: The bottom of the shoe protector features dense non-slip particles that increase friction against the floor. Whether indoors or outdoors, it effectively reduces the risk of slipping, provides a stronger grip, and helps reduce walking noise to avoid disturbing others. Anti-static Material: This reusable shoe cover is made of high-quality anti-static striped fabric that effectively isolates static electricity generated by the body and offers good anti-static performance. Outer Material: Polyester Inner Material: Polyester Sole: Polyester Reusable & Washable: These foot covers can be machine washed or hand washed. Compared to disposable shoe covers, they are more practical and environmentally friendly. Air dry naturally after washing. Fit Most Shoe Sizes: These shoe covers are one size fits all, suitable for shoe sizes between 3.5–9.5 (UK size). They fit men and women, young and old. Each pair includes an elastic band that stretches freely and helps prevent the covers from slipping off. Widely Applicable: These dust-proof overshoes are suitable for use in laboratories, offices, museums, homes, dental clinics, hospitals, workshops, camping, cars, gardens, and more. They help protect indoor cleanliness and hygiene while preventing your shoes from getting dirty.