Packs include one 2” square of HENAN OKAY, Delrin acetal, LDPE, HDPE, UHMW, HENAN Okay, cast HENAN Okay, polyester, polystyrene, Rexolite polystyrene, and Noryl PPO. Tyvek Polyethylene Fabric mposed of high-density polyethylene fibers, this durable material is tear and water resistant and keeps its high strength in both wet and dry environments. HDPE Mesh Fabric