CaseBuy Ultra Thin Soft Silicone Gel Keyboard Protector Skin Cover for Lenovo Yoga 900 13.3" 2-in-1 Touch-Screen Laptop US Version (Green) Made for Lenovo Yoga 900 13.3" 2-in-1 Touch-Screen Laptop. Waterproof and dustproof, protect your keyboard against everyday spills (coffee/beer/milk), dust (crumbs/powder), liquid, pet's pees or the other incidents High quality silicone material, durable, healthy and environment friendly Prevents keyboard keys from general wear and tear caused by everyday use. Removable and washable, the free cleaning without affecting the effectiveness of its use.