Is today just really NOT the day? Pick the mug that suits your mood with this clear glass mug that has "Not Today" in rainbow colors on the front. Holds 13 ounces of coffee, tea, hot chocolate whatever beverage you love, this mug will keep them nice and warm for you. Plus, you'll look super cute drinking out of it. Made in the USA, dimensions are 3.5 x 3.75 inches.