"OPEN HEART" design, Stainless Steel Polar Camel Tumblers features double-wall vacuum insulation with a clear lid (comparable in quality and design to "Yeti"-type). The mug has a narrower bottom to fit most standard cup holders. It is 2X heat & cold resistant compared to a normal tumblers.  Other colors and YOUR CUSTOM DESIGN is available.  Contact us for information and discount quantity pricing.