So you're on the trail, stop for a drink and watch in horror as your water bottle cap goes sailing over the edge of the cliff. The YETI Rambler Bottle MagDock Cap to the rescue! The ingenious design of this cap includes a magnet docking station that harnesses the power of magnets. When you remove the cap, it secures itself to the docking station and refuses to budge until you put it back on. The customer-favorite narrow spout of the chug cap allows for quick drinking while keeping ice cubes at bay. Add a leakproof seal when it's closed, and you've got a winner.