... tightly, does not influence any operation of the keyboard.* Waterproof! Needn't be afraid of any more that the liquid, ... water, coke, fruit juice, coffee, etc. Spatter and enter the keyboard to damage the computer. * Dustproof! Prevent dust, cigarette ash, biscuit ... bits from falling into the keyboard, extend the life-span of the keyboard* Washable! When it's dirty, you can ...