1. knee protector 2. material:cotton,neoprene,acrylic, nylon,polyester etc 3.thickness:2-5mm 1. name:knee protector2. material cotton,polyester ... bags etc industry. sport products have wristbands,sport headband,knee brace,waist brace,sport ankle etc.In addition,also ... can do better . We are an OEM manufacturer provide high quality products with competitive price ! According to the different ...