Double wall vacuum insulated perfection made from lifelong stainless steel. Set off on your refreshing tailgating, picnic, hiking or camping adventures with your water, wine, or cocktail icy-cold for 9 hours. Keeps hot beverages scalding-hot for over 3 hours. The 12-ounce tumbler includes a removable BPA-free straw-friendly lid and is designed for sweat-free convenience.