Using state-of-the-art lamination technology, MicroGuard MP® Microporous Shoe Covers combine a soft, non-woven fabric with a microporous film. A tear-resistant liquid and particulate barrier helps safeguard from blood penetration, various industrial chemicals, along with dust, dirt, and grime. This breathable fabric allows moisture to escape, so your feet are more cool and comfortable even as you sweat. These shoe covers come with a strong elastic closure at the top to keep them in place and they are also environmentally friendly.