Defender x YETI Rambler Bottle 18oz/532ml - DLFL217GYAThe Rambler bottle. Features double wall vacuum insulation to keep your water cold, a dishwasher safe Chug Cap for controlled gulps, and a shatter resistant spout. It's easy to clean and fits most cup holders. Do not use this Rambler Bottle Cap with carbonated beverages, as storage for food or perishables, or to store boiling contents or with contents above 185F 85C. Leak proof twisted lid. Double Wall Vacuum Insulation Keeps cold drinks cold and hot