Unlike traditional camp mugs, Yeti's double-wall, vacuum-insulated design keeps hands safe from hot or cold contents. Plus, it conveniently stacks and stores out of sight. Just like all Rambler Drinkware, both the mug and lid are dishwasher safe. However, please be aware that the wide opening of the mug may cause contents to cool quicker, which is why we include the MagSlider Lid. Important: Do not place the mug over an external heat source or open flame, as this may damage the vacuum seal. Additionally, while the magnet slider helps contain spills, it is not leakproof. Weight 454 g (1 lbs) Dimension 13 x 10.2 cm (5.1" x 4")