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 Mug and lid are dishwasher safe making them 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 MagSlider ™Lid, it adds an additional barrier of protection to prevent heat or cold from escaping