LEAKPROOF FOR HOT COFFEE ON THE MOVE. On-the-go caffeine enthusiasts, meet the ultimate drinking vessel for filling up and hitting the road. While this 12 oz. Rambler® Bottle is conveniently light, it holds more than enough joe to jump-start your day. This Rambler® Bottle gets extra kudos for its included, sip-from-any-side, 100% leakproof HotShot™ Cap, which means when it’s closed, it’s safe to stash in your backpack, too. Please note: Do not use the Rambler® Bottle HotShot™ Cap with carbonated beverages or for storage of food or perishables.