The YETI Rambler® Mug 14 oz is the strongest and most functional mug around. Unlike the others, its double-walled vacuum-insulated construction protects your hands from hot or cold contents, keeping coffee, oatmeal or anything else well insulated. Ideal for camping adventures, it's designed with a loop handle to give you a firm grip on whatever you're sipping on. The large opening offers content that is easily accessible, but more prone to cooling down. This is why the cup is supplied with the MagSlider ™ lid which, thanks to a sliding magnet closure, adds an additional barrier of protection. Both the cup and lid are dishwasher safe and easy to clean. The closure is not watertight and does not completely prevent leakage. Important: Do not place the cup on an external heat source or fire.