Leakproof, insulated, and perfectly sized for a piping hot brew. On-the-go caffeine enthusiasts, meet the insulated, 360-drinking, 100% leakproof cap ideal for morning commutes, cold-weather hunts, night shifts, and beyond. With just a half twist and a click, you can sip from any side and enjoy that perfect, piping-hot temp. And as an added bonus, you can put the HotShot? Cap on any of our Rambler Bottles itcompatible with all of 'em. But if you ask us, the 12 oz. and 18 oz. are the perfect sizes for it. Please note: Do not use the Rambler? Bottle HotShot? Cap with carbonated beverages or for storage of food or perishables.