Cosmos Silicone Palm Wrist Rest Pads Set for Old Macbook Pro 13" / Macbook Air 13" Laptop Computer (Aqua Blue) Package included 2 x palm wrist pads Made of silicone for easy install and remove (non-adhesive) Position the palm pads over the sharp edge for more comfort, like macbook pro Washable and comfortable. To improve the Wrist Rest stay on the laptop, please clean the bottom of Wrist Rest before usage. Dimension:3.9"x3.2"(LxW), 2.5 mm thick. (Size fits ONLY for Old version MacBook Pro 13" with Retina Display Non CO-ROM (Model No. A1502 / A1425) & MacBook Air (Model No.A1466). BUT DOES NOT FITS for New MacBook Pro 13-Inch and MacBook Air 11" / 12".)