Tyvek is an innovative substance that has been utilized in many different types of applications for nearly half a century. It is made from high-density, very fine polyethylene fibers. Tyvek feels like a combination of fabric and paper. However, it is actually a multi-faceted substance that is vapor permeable but resistant to puncture, water, tear and chemicals. MilitarySpecPackaging.com offers a wide variety of VCI multi purpose tyvek sheeting, making it easy to find the best fit for your needs.