This protector doesn't not adhere to your keyboard. And the manufacturer recommends that it be removed before you close your 'Book. Neither of these things are mentioned in any of the manufacturer's product descriptions. It doesn't fit the keyboard of my iBook quite well enough to be form-fitting.It has little lumps and bumps around the function keys--tho this is EXACTLY the machine this particular skin is designed for. I think the level of protection it offers against a spill big enought to cause any harm is dubious; it seems that liquid could easily just flow under the thing.