... ) Available material: materials for silicone, NBR, fluorosilicone, viton (FKM), viton DuPont & Dow elastomers, neoprene, HNBR, NBR + PVC, natural rubber, SBR, IR, IIR ... (butyl rubber), CR (neoprene), SBR, AU, ACM, CO, etc. NSF ... ) Available in various sizes and colors Inner packing: 200pcs/bag Silicone Wristband