Rambler jr. Is a small-and-mighty kids bottle over-engineered for your little wild ones. This 12 oz. Powerhouse inherited double-wall vacuum insulation from its rambler predecessors, carrying on the family legacy by locking in ice-cold water through backyard campouts and breaks between tag. As a well-deserved convenience for you, we made sure its straw cap (which comes included by the way) is leak resistant when closed and both the bottle and cap are dishwasher safe. Plus, it's engineered with a super strong, stainless steel armour that won't flinch through bumps and drops on account of slippery hands. For ages 3+. Find out more about the rambler range on our faq page. Capacity 354ml / 12 us fl oz. Empty weight 450g. 18/8 Stainless steel. Made with kitchen-grade stainless steel, so they’re puncture- and rust-resistant. Double-wall vacuum insulation. Keeps cold drinks cold and hot drinks hot until the last sip. No sweat design. Prevents condensation, keeping hands dry. Duracoat colour. Built for the wild, this color won’t peel or crack. Bpa free. So they can safely sip without a worry in the world.