Spigen via Amazon offers the Spigen Incredible Shield Protective Cover for 2015 12" Macbook, model no. SGP11534, for $21.99. Coupon code "SDSPIG70" cuts it to $6.60. With free shipping, that's the lowest total price we could find for a similar Macbook cover elsewhere by $13. It fully covers the exterior of the Macbook and is easily removable with no residue.