- Material: a special blend of the highest grade of Japanese silicone, flexible,tough, soft and washable; helps muffle typing noises - Thickness: 0.5mm- It protects your notebook against wear and tear, spills, dirt, food crumbs, sweet, bugs and other unwanted elements from getting on or under your keys- Cover can put 100??C water to disinfect- Environment-friendly product- It is transparent, comfo