Made from Tyvek, a unique material used in FedEx envelopes, this fabric creates the ultimate jacket for a throwback look. 2 s... Made from Tyvek, a unique material used in FedEx envelopes, this fabric creates the ultimate jacket for a throwback look. 2 side pockets. 2-way zipper. Fitted. Elastic cuffs and waistband. Use care when washing: hand wash cold, hang dry.