This protective case is particularly beautiful and worthy of Mac aesthetics. It is perfectly adapted to the dimensions of mac book air 11 (or 13 inches), so do not slip and puts it smoothly. Made a big dense felt it really provides effective protection. The originality of this beautiful material makes a high quality object, light, compact and aesthetic. It really renews this kind of essential products for shelter his mac book without hindering mobility. A real warm and practical slipper.