YETI Rambler 2.0 One Gallon Jug - The hydration station that keeps the water ice-cold or fill it with enough coffee to keep the whole crew caffeinated. The 100 percent leakproof, Rambler One Gallon Jug is designed with double-wall vacuum insulation to seal in the temp. The MagDock Chug Cap locks in every drop and the Glugger-Not Vent makes it easy to sip and smooth to pour. Features 100 Percent leakproof Glugger-Not Vent Wedge added for smoother pours Hands-free MagCap for easy pouring Double-wall vacuum insulation keeps beverages hot or cold