Durable USB Pen Drive Silicone Cover Strap 1, material:100% silicone 2, CE, RoHS.SGS can be met 3, Washable, impermeable Item Name: Silicone USB Pen ... temperature resistant, climateproof, impermeable, heat conduction, flexible but indeformable, washable, durable, long-life, insulating, radio resistant, good touch feeling, dust-proof ...