Effectively Prevent Dust: The universal keyboard protector is mainly used for desktop computers with standard sizes. Keyboard film can effectively prevent water or other stains from entering. Keep the keyboard surface clean. Durable Material: The anti-dust keyboard cover is made of high-quality silicone material, soft and comfortable, and will not harm the computer. Environmental protection, durability and long service life. Easy to use: The computer keyboard cover has a transparent ultra-thin design, even if it is covered on the keyboard, the letters can be seen clearly. Does not affect normal typing and other use. Perfect Fit: The waterproof keyboard protector is exquisitely crafted, not too big or too small. The keyboard protector fits the keyboard perfectly and is not easy to slip off. Satisfactory Package: You will get 4pcs silicone keyboard protectors with size 44.5*13cm. If the quantity is sufficient, you can replace old or dirty keyboard membranes.