Viziflex Seels Keyboard Cover Compatible with Logitech K340 - Part #407G100 - Protects from Spills, Dirt, Grease, Food, - Easy to Clean

Self adheres to the back of the keyboard and has a flap to cover the on-off switch.Perfect fit for the keyboard and I don't expect to be forced to take my keyboard apart and clean/dry it again. Good value and a good product.