The Yeti Rambler 18 oz. Bottle With Chug Cap features a tough, durable construction, with double-wall vacuum insulation to keep your beverages cold (or hot) until the last sip. The Rambler comes standard with a quick twist, TripleHaul handle that comes off, exposing a shatter resistant spout. Yeti Rambler 18 oz. Bottle With Chug Cap Feature: 18/8 Kitchen grade stainless steel Shatter resistant Double-wall vacuum insulation keeps drink hot or cold until the last sip No Sweat design Dishwasher safe 100% Leakproof