The YETI RamblerÂ® 14 oz. Mug is the toughest, most over-engineered camp mug out there. Unlike traditional camp mugs, this double-wall vacuum-insulated body protects hands from hot or cold contents while keeping coffee, chili, oatmeal â€“ you name it â€“ well-insulated. Like all Rambler Drinkware, the 14 oz. Mug and its lid are dishwasher safe making it easy to clean. The mugâ€™s wide opening means contents are easily accessible, but will cool quicker. Thatâ€™s why the mug comes with the standard Rambler 30 oz. Lid (also compatible with the Rambler 30 oz. MagSlider Lid).