Waste no time hydrating on your morning hikes, kayak trips, and daily commutes with our flip and sip color-matched straw cap water bottle. The Rambler 18 oz. Water Bottle has a leak-resistant cap so youll have cold water wherever you go. This bottle is over-engineered and double-wall insulated to keep your water cold until the last sip. Plus, it comes with a wide-straw insert, so you get more drink with every sip.