Our 30 oz. Stainless Steel Engraved Vacuum Insulated Tumbler Mug features double-wall vacuum insulation with a clear lid. This 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. Available in silver, red, blue, pink, teal, light blue, purple, navy, gray, orange, maroon, white, green, black, yellow & coral.