SafeKeys offers splash resistant protection against light spills, which is essential as all Macbook, Macbook Pro and Macbook Air keyboards are now fitted with LSIs (Liquid Submersion Indicators) as standard. SafeKeys are made from high grade, tear resistant silicone. Coated on the top side for a soft touch, and polished on the underside to create a lint / grime free environment for your Keys - whilst not obstructing typing.