MSR Mug - The finest backcountry mug ever, we've taken all the best properties of our favorite mugs and rolled them into a lightweight and functional design. A strong stainless steel lining and HDPE lid won't ever leach chemicals or taste and a non-slip, EVA foam exterior keep beverages hot-not your hands. You can remove the insulated sleeve for easy machine washing and they pack quietly inside all of our Exo T , Quick T , and Flex T cookware as well as most others. 12 oz. mugs are available in four colors to personalize your set.