INSTORE PICK-UP ONLY Lock in every drop between crowded commutes and chalk-covered climbs. Quick-access hydration 100% leakproof Lockable covered chug spout Magnetic C-Lock Double-wall vacuum insulated Dishwasher Safe. The Rambler® Flip Chug Cap gives you quick access to hydration on nonstop days. When thirst hits, switch the C-Lock to the right to unlock, and a quick flip does the trick. Then press the cap down and switch the C-Lock to the left to prevent unwanted spills. The fully leakproof cap keeps your liquids sealed.