1. 2mm Neoprene 2.Constructed of thick, durable, high-quality neoprene. Material: Neoprene, 2mm (Polyester+SBR+Polyester)Size:23*55CM Feature:1.Constructed of thick, durable, high-quality neoprene.2. Available in a range of colors , patterns and sizes3.Can print with your logo and OEM is welcomed.4.Style and Fashion,5.Easy to carry, not easy to fall Neoprene skull mask