Conveniently sized to fit in most vehicle cup holders, it's the Looney Tunes Marvin the Martian 14 oz. Stainless Steel Travel Mug! This Looney Tunes mug featuring the animated character can hold up to 14 ounces of liquid and keeps drinks hot or cold. The Looney Tunes Marvin the Martian Insulated Travel Mug with Handle is acrylic with a stainless steel inner wall. Hand wash only. Not dishwasher safe.