Bolayu Mini Portable Flexible Silicone USB PC Keyboard Foldable for Laptop Notebook Material: silicone. Size: 24cm x 9cm / 9.45inch x 3.54inch. Comes with a USB connector and uses friendly. New foldable USB keyboard. Unlike normal keyboards, this silicone keyboard can be cleaned with soap and water. Unique printing technology guarantees letters will not wear out. Great for travel, school or any work environment. It's soft and durable, comfortable touch. With its proctective skin, dustproof and waterproof, provide full protection for keyboard.