The Custom Walker's Cay YETI Rambler® 14 oz. Mug is the toughest, most over-engineered 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 – you name it – well-insulated. Like all Rambler Drinkware, the 14 oz. Mug and its lid are dishwasher safe making it easy to clean. The mug’s wide opening means contents are easily accessible, but will cool quicker. That’s why the mug comes with the standard Rambler 30 oz. Lid (also compatible with the Rambler 30 oz. MagSlider Lid).