The roll-up keyboard by Karnotech is made of high quality non-toxic silica gel, and it works with PC and laptop. It’s lightweight, weatherproof, quiet and soft on the fingertips. This is a very unique keyboard and completely silent. When it gets dirty or dusty, just unplug it and move it under the faucet to wash it, and rub it dried out with a towel. It’s really cool things, the keyboard that can be rolled up for easy portable and storage. The perfect keyboard on the go.