YETI Rambler Half Gallon Jug - The human fuel tank that keeps your thirst quenched from dusk 'til dawn. Built with double-wall vacuum insulation, the Rambler Half Gallon Jug keeps the sips ice-cold (or piping hot) to the very last drop. The leakproof MagDock Chug Cap locks in liquid and every pour is smooth with the removable Glugger-Not Vent. Features 100% Leakproof Glugger-Not Vent Bearfoot Non-Slip Ring Dishwasher Safe