A registered trademark of Dupont, Tyvek refers to flashspun high-density polyethylene fibers, a synthetic material. Most commonly found in housewrap, this textile has the ability to let water vapor pass through it, but not liquid water. Ideal for industrial workwear, Tyvek is lightweight and crisp yet easily draped making it a good choice for coveralls, and other one piece garments as it has a light HAZMAT quality.