Cosmos Silicone Palm Wrist Rest Pads Set and Silicone Keyboard Cover Skin for Apple MacBook Air 13, MacBook 13 15 Laptop with Retina Display (Siver) Package included 2 x palm wrist pads & 1 x silicone keyboard cover Wrist Rest Pads are made of silicone for easy install and remove (non-adhesive) Dimension: 3.9" x 3.2" (LxW), 2.5 mm thick Washable and comfortable Suit for Apple MacBook Air 13", MacBook 13" 15" Laptop with Retina Display