... shell case for Apple MacBook Aircrystal shell thickness only 1.2 MM oh, so put on thick after won't feel ... the front side to prevent from slipping on smooth surface.2-piece light-weight shell easily snaps on and off.WARNING : pls ... , B991LL/A, MB466LL/A, MB467LL/A, MC374LL/A, MC375LL/A; 2) MacBook pro 15.4 " : A1286, MB470LL/A, MB471LL/A, MC026LL ...