1. Dimension of keyboard wrist rest: 17.52 x 3.15 inch dimension of mousepad: 9.84 x 7.87 inch dimension of coaster: 3.9 inch (diameter). Fits all mouse and keyboard. This mousepad set will be compatible with MacBook or Notebook or Chromebook or Ultrabook or Desktop or PC, also compatible with iMac. 2. Ergonomically designed with breathable neoprene cloth and raised memory foam. Efficient for easy typing and pain relief. Offers soft support to relieve pressure and pain of your wrist, keep your wrist in a natural and comfortable state. 3. Non-slip base can firmly grasp the desk to prevent sliding or any unintentional movement. One cup coaster is included to meet more your needs. All these pads will give you enough space to operate your mouse and keyboard, also can decorate your desktop. 4. Edges is reinforced to endure long-time use. The filled cushion part will slowly rebound when leave it, not easy to deform. Well designed to prevent the wrist fatigue and pain when you work long hours. Note: Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Please allow slight dimension difference due to different manual measurement.