The Dvorak Keyboard Cover for MacBook, MacBook Air & MacBook Pro (Unibody, Black Keys) from KB Covers is a plastic cover that converts your MacBook's QWERTY keyboard into a Dvorak. The QWERTY layout was actually designed to hinder typing speeds. Typewriters in the 19th century would often jam if keys were pressed in rapid succession -- the QWERTY layout slowed typists so that jams would occur less frequently.
The Dvorak Simplified Keyboard was developed in 1936 to do the opposite. Its keys are arranged to minimize finger movement when typing, helping typists to increase their rate. This cover converts your MacBook's QWERTY keyboard layout to Dvoark, perfect for those who would like to retrain themselves on the more efficient layout and those who are already Dvorak touch typists.
The cover is compatible with the US versions of: MacBook (all models), MacBook Air (13.3"), and MacBook Pro (Aluminum Unibody with black chiclet keys only).