MediaDevil"s waterproof Typeguard protects your keyboard from dust, liquid spills, and other contaminants. It is easy to apply, uses no adhesive, and is washable and reusable. Typeguard is engineered from 0.2mm ultra-thin, non-toxic, high grade Thermoplastic Urethane ("TPU"), which allows it to be over 50% thinner than regular silicon protectors. This allows for minimum interference while typing, and reduces keystroke noise. It also ensures a highly transparent appearance for each back-lit key to shine through. This product is compatible with all sizes (13 inch / 15 inch / 17 inch) of MacBook and MacBook Pro models released in 2010, 2011 and 2012 that have a US-spec keyword. It is NOT COMPATIBLE with the new 2012 Retina Display MacBook Pro, any MacBook Air model, or any MacBook model that has a US-spec keyboard. Our US keyboard protector is available here: http://www.amazon.com/gp/product/B0071JS118 This is our Anti-Bacterial edition. Typeguard is also available in a Clear edition, which is practically invisible when applied (our Anti-Bacterial edition has a transparent greyish appearance, due to its embedded silver nanoparticles). Here is the product link: http://www.amazon.com/gp/product/B0068CMEFI We also recommend our Magicpotion screen cleaning solution for your MacBook screen: http://www.amazon.com/gp/product/B008EOJIVG Your satisfaction is really important to us, and we will do our best to help ensure that you are a happy MediaDevil customer. MediaDevil was awarded the UK Department of Trade & Investment (UKTI)"s 2011 Business Innovation Award for "demonstrating the virtues of excellent products and a passionate company". -tt.