Tyvek® is a 100% synthetic material made from high density non-woven polyethylene. Tyvek® is lightweight, durable, breathable and yet offers high resistance to water, abrasion, bacterial penetration and ageing. This makes it an outstanding material for enhancing various applications in numerous industries.

BARRIER PROTECTION
Tyvek® is made of continuous fibres that offer inherent resistance to microbial penetration. This prevents hazardous materials such as asbestos, mould, fibreglass and lead from passing through the material.

Source: https://www.dupont.de/tyvek/what-is-tyvek.html