Tyvek Shoe Cover Tyvek disposable shoe covers are the industry standard for dry particulate barriers. Microscopic particles as small as 0.5 microns can't pass through Tyvek even after it's been abraded. Tyvek disposable shoe covers are an inherent barrier not easily scratched or worn away. Comfort You'd Never Expect Standing still, your body radiates heat and moisture vapor. So, it's no surprise that working in protective apparel that can't breathe escalates the problem dramatically and can affect productivity. It's called heat stress. And, it can seriously compromise your safety,especially in hazardous environments. Tyvek lets air and moisture vapor pass through. Tyvek breathes. Breathability is a key factor in reducing heat stress. Tyvek is six times more breathable than microporous film garment materials. Tyvek is available in a wide variety of garment styles, such as coveralls, lab coats, smocks and aprons and has a wide range of applications in many different industries.