... 2.eco-friendly , green product . 3. foldable ,waterproof , dustproof Water proof silicone Keyboard Features:1.Full size keyboard with numeric keypad ... silicone, eco-friendly. SGS,ROHS passed,completely sealed 4.Water Proof: water-proof surface and washable, can be used even inside shallow water5 ... .Acid and alkaline proof: it can be used safely even in an acid ...