Ultra-durable for your little wild ones. For Ages 3+. YETI kids need a Leakproof while closed bottle that can keep up. Introducing Rambler Jr. – a small-and-mighty kids bottle over-engineered for your little wild ones. The 12 oz. powerhouse inherits double-wall insulation from its Rambler predecessors, carrying on the family legacy by locking in ice-cold hydration through backyard campouts and breaks between games of tag. Plus, it’s engineered with a super strong, stainless steel armor that won’t flinch through bumps and drops on account of slippery hands. As a well-deserved convenience to you, we made sure both the bottle and cap are dishwasher safe (because one less chore sounds nice). And as a fun twist for them, we added an energetic dose of color from top to bottom (that won’t crack or peel, by the way).