This might be the ultimate camp mug. It has a double wall vacuum insulation and it's the perfect size to enjoy coffee, chili, or ice cream longer. The YETI MagSlider Lid seals your mug to prevent splashes, and when removed, the bottom grooves allow mugs to nest perfectly so you can stack them and save space when storing. Plus its got an ultradurable ceramic lining for easier cleaning. Like all YETI Rambler Drinkware, the mug and lid are dishwasher safe. Please note - Do not place the mug over an external heat source or open flame, vacuum seal or damage may occur. The mug's wide opening means contents may cool quicker without the lid. Stackable base - remove the lid and nest your rambler 14 oz. mugs to save space 18/8 stainless steel resists dents and drops Double-wall vacuum insulation keeps drinks cold to the last drop Dishwasher safe because no one needs more work to do