Rambler Jr. is a small and mighty kids' bottle over-engineered for you little wild ones. This 12-ounce powerhouse inherited double-wall vacuum insulation from its Rambler Drinkware predecessors, carrying on the family legacy by locking in ice-cold water for backyard campouts and breaks between tag. Yeti made sure its included straw cap is leak-resistant when closed and both the bottle and cap are dishwasher safe.