Personalized Tumblers Custom Your Name and Color on Stainless Steel Tumbler. Great gift for every occasion. Road travelers, tailgaters, friends and neighbors, outdoor men and sportsmen, yogis, they all deserve high-quality coffee mugs. Get your engraved custom tumbler! Vacuum Insulation Technology This tumbler has a double-walled exterior with a vacuum between the walls. This means your drink has no medium for the heat or cold to transfer through. Your beverage will truly stay as hot or cold as long as possible. Even filled with ice or boiling water, the bottle will never sweat or get hot to the touch! Premium Copper Coating Maximum Insulation Special copper coating technology, unique. The exterior of the inner wall (inside of the double wall) has been dipped in copper to minimize the transfer of energy through the metal. This technology the best insulation of any tumbler on the market! 18/8 Stainless Steel The insulated tumblers are made of high quality food grade 18/8 stainless steel. Whether you are drinking water, beer or even coffee, this tumbler will not retain the taste or smell of any liquid. Durable Powder Coating Enjoy the protection and color that rugged powder coating adds to the tumbler. Our powder coating is sleek and durable, making it the perfect travel companion. All of our colors have been hand selected according to the most popular fashion trends. Fits in Cup holders All Cruiser tumblers fit in cup holders. Stay hydrated at the office, while camping, on road trips, hiking, cycling, golfing, shopping and so much more! Use as a travel mug, coffee cup, beer canister, tea cup and water bottle. Your drink will stay cold for up to 24 hours and warm up to 8 hours, thanks to the double-walled, vacuum insulated copper coating technology. This truly is the perfect cup for hot and cold drinks.