Stainless Steel Polar Camel Beverage Holders feature double-wall, vacuum insulation. They are heat and cold resistant and hold cans and bottles. Simply screw off the rubber top and place the beverage inside. Simple Engraving (2 lines) is included when you purchase a mug from us. If you want something more complex, we have to charge more. We are able to include picture non-copywrite logos and all kinds of things. Purchase in bulk for a large discount!