This tumbler will keep your drink warm or cold for hours! a great way to promote your farm or business, or just add a saying to the cup that makes you smile. 20 oz. Stainless Steel Polar Camel Tumblers features double-wall vacuum insulation with a clear lid. The tumbler has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal tumblers.