The Rambler 18 oz (532 ml). Bottle is next-level. The perfect addition to your rough commutes, day hikes, or kayak sessions, this insulated water bottle has the power to keep your water cold (or coffee hot) until the last sip. Like the rest of our Rambler series, the 18 oz. Bottle features a No Sweat Design to keep your hands dry with double-wall vacuum insulation to lock in temperature. Its 18/8 stainless steel construction stands up to even the toughest of conditions, and you’ll find the leakproof, Cap protects your truck cab or day pack from spills.