I like '''Mareware''' [http://www.marware.com/products/MacBook_2/Macbook-Protection-Pack-Deluxe] it includes a two-in-one microfiber keyboard cover & cleaning cloth. a Soft PVC leather hand rest, (provides protection to the top case sides that scratch/discolor), and a clear film track pad cover.
There's also a Silicone version of the hand rest and track pad protectioni, with cleaning cloth for keyboard and screen.
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