Polar Camel 30 oz. Dark Gray Ringneck Vacuum Insulated Tumbler w/Clear Lid. Holding a hot and cold liquid for many hours. Because of it remarkable design and top quality manufacture. It being a first choice of many customers. Polar Camel tumbler could be laser engraved with text or with company logo. When powder coated tumblers laser engraved, we can see a nice stainless steel color image or text.