This hydration innovation marries our chug-style cap with the simplicity, function, and power of magnets for a 100% leakproof, on-the-go solution. The MagDock Cap is smartly designed with a magnet docking station so you never lose your cap when youre downing your H20. And the customer-favorite narrow spout of our Chug Cap allows for faster drinking while keeping ice cubes at bay. You can also put the MagDock Cap on any of our Rambler Bottles its compatible with all of em. Thats just too many wins to count. The MagDock Cap is not intended for use with carbonated, perishable, or hot beverages.