The YETI Rambler 18-oz. Water Bottle With Flip Chug Cap gives you quick access to hydration on nonstop days. When thirst hits, switch the C-Lock to the right to unlock, and a quick flip does the trick. Then press the cap down and switch the C-Lock to the left to prevent unwanted spills. This YETI Rambler boasts double-wall vacuum insulation to keep drinks cold for hours plus rust- and puncture-resistant durability. The fully leakproof cap keeps your liquids sealed as you navigate packed mornings and congested sidewalks. Thanks to a covered spout on the Flip Chug Cap, you can toss it in your pack's hydration holster or gym bag without worrying about the grime. 18-oz. Rambler insulated water bottle with innovative Flip Chug Cap Double-wall vacuum insulation Rust and puncture resistance Magnetic, lockable covered spout 100% leakproof Dishwasher safe Flip Chug Cap not for hot or carbonated drinks or storing food or perishables