Made with DuPont Tyvek. DuPont and Tyvek are trademark or registered trademark of E.I. du Pont de Nemours and Company. DuPont Tyvek brand protective covers are made from high-density polyethylene (HDPE) in a proprietary manufacturing process that creates a unique balance of properties that are ideal for a protective cover. Protective covers manufactured with 100% DuPont Tyvek provide superior protection from harmful environmental conditions, are lightweight and exceptionally breathable, and strong, durable and long lasting.