Like all Rambler® Drinkware, the 14 oz. 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, but please note — the magnet component is not leakproof and will not prevent spills. Important: Do not place mug over external heat source or open flame. Vacuum seal or other damage may occur. DuraCoat™ Color Technology is built to last with no chipping, fading or cracking 18/8 Kitchen-grade stainless steel construction for extreme durability Double-wall vacuum insulation keeps your beverage hot or cold No Sweat™ Design keeps your hands and cup dry Capacity: 14 oz. Dimensions: 3.75” H x 5” W Weight: 13 oz.