Using state-of-the-art lamination technology, MicroGuard MP® Microporous Boot Covers combine a soft, non-woven fabric with a microporous film. A tear-resistant liquid and particulate barrier helps protect against blood penetration, various industrial chemicals, along with dust, dirt, and grime. Our breathable fabric allows moisture vapor to escape, so your feet are more cool and comfortable even as you sweat. The generous 17" length provides better coverage of the feet and lower legs. Boot covers come with a strong elastic top to help keep them in place throughout your workday.