The Rambler 18 oz. Bottle is a next-level addition to your rough commutes day hikes or kayak trips. That's because this tough bottle is double-wall vacuum insulated to keep your water cold (or coffee hot) until the last sip and its 18/8 stainless steel construction can stand up to even the toughest of conditions. Like the rest of our Rambler series, the 18 oz. Bottle features a No Sweat Design to keep your hands dry and you'll find the leakproof 3-finger grip insulated TripleHaul Cap protects your truck cab or day pack from spills.