Sungwoo Foldable Silicone Keyboard USB Wired Waterproof Rollup Keyboard for PC Notebook Laptop (Black+Grey) Flexible, Soft, Foldable, Roll-up, Silent, Waterproof, Dustproof, Lightweight, Portable and easy to store. Multiple function make it an extraordinary computer keyboard! Soft silicone material: Made of high intensity and high elasticity silicone gel, non-toxic and odorless. Flexible material allow you to fold it or roll up freely, very handy and convenient to take with notebook, laptop and mac. Waterproof and dustproof: No additional keyboard cover skin required, food crumbs or dust can be easily cleaned thoroughly. Clean the silicone keyboard with water, alcohol, or alcohol based disinfectant. Silent Click: Soft material allows discreet silent typing experience. No typing sound design makes you have a quiet working environment and avoid disturbing others. At night, it can keep your family have a good sleep and also keep you do work seriously. Warm Tips: To protect the keyboard and extend service life, pls do not damage the item as following actions: stretch and twist keyboard; place heavy objscts on keyboard; spill liquid on keyboard; press on rolled up keyboard.