The YETI Hopper Sidekick is a great accessory to add to your cooler, especially the YETI Hopper Cooler. The Sidekick allows you to store items in your cooler while keeping them safe and dry. Great for storing wallets, game licenses, phones, and any other gear that you do not want to get wet. Designed to mount to the Hopper HitchPoint grid (Hopper cooler not included). Dimensions: 9" x 1.5" x 5.5".