Description Quench your thirst with your favorite drink in this Custom Name 20 oz Colored Tumbler w/Clear Lid. Features double-wall vacuum insulation with a clear lid that keeps hot drinks hot and cold drinks cold. The mug has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal travel mug and is BPA and lead free. Personalize with up to nine characters of choice. Specifications Overall Size 20 oz: 3 3/8"(L) x 6 7/8"(H) Material: Stainless Steel/Powder Coating Double-wall vacuum insulation with a narrower bottom to fit most standard cup holders. BPA Free. Lid is 3 15/16" diameter. Mouth hole is 1" x 5/16". Not recommended for dishwashers, hand wash only. Seamless construction so there is no leak point. There is not a non-slip base on this mug.