Not just another tumbler, the Corkcicle tumbler expands on age-old insulation technology to keep your drinks cold for an Unbelievable 9 hours or hot for 3 hours. Unlike most insulated tumblers, this tumbler has a modern sleek design that is something you want to show off when you are using it. It offers three walls of proprietary insulation, stainless steel construction, 24 ounces or 16 ounces of Capacity. Stainless steel won't impart flavors or won't leach chemicals. Drink your wine and taste your wine as it should be. Switch to coffee-don't worry, this tumbler can transition back and forth between cleanings. It goes where glass bottles can't. The pool, the beach, the boat. It also features a shatter-proof lid for even more security and is BPA and lead free. Now you can keep your drinks ice cold without a cumbersome Cooler. This tumbler won't break or leak-making it great for rugged environments. It will keep your drinks ice cold for 9 hours while you're out in the hot sun. Or keep Coffee and tea piping hot for 3 hours. The tumbler transitions from summer to winter like a pro-shot you can warm up on chair lifts, Mountain peaks, and all-day Trails.