Thermos 24 Ounce Travel Mug Extra Large has a double wall foam insulation that retains hot or cold temperatures. The 24 Oz capacity is great for coffee. The unbreakable stainless steel exterior is easy to clean finger prints and has a easy grip to prevent spills. The Thermos Foam tumblers fit in most automotive cup holders. The sweat proof design will not leave water rings spill resistant slide lock. Hand wash is recommended..