On-hand hydration for morning hikes, kayak trips, and daily commutes. The Rambler 18 oz. Bottle is a necessary addition to your morning hikes, kayak trips, and daily commutes. This tough bottle is double-wall vacuum insulated to keep your water cold until the last sip, dishwasher safe for easy cleaning, and comes standard with the Chug Cap. The shatter-resistant, dishwasher-safe spout allows for controlled gulps on the go. When it's time for a wash or refill, remove the entire cap. Fits in most cup holders.