Main Features:• Material: silicone • Product use: Mainly used on laptop keyboard, it can effectively prevent water, dust, small debris, food scraps• Ultra-thin material, ultra-transparent dust, oil, beverage, biscuit crumbs, etc. will never invade your beloved keyboard.Product size: 28.00 x 12.00 x 0.20 cm / 11.02 x 4.72 x 0.08 inches Package weight: 0.038 kg Package size: 29.00 x 13.00 x 0.50 cm / 11.42 x 5.12 x 0.2 inchesPackage Contents: 1 x Membrane