Corkcicle 12oz Tumbler Classic Colors Hydration Belts & Water Bottles Brushed Steel : Wave goodbye to boring water bottles and coffee cups! The Corkcicle 12 oz Tumbler in the Classic colors offers impeccable style and functional hardware youll fall in love with. This cup is made from a durable, triple-insulated stainless steel that keeps your favorite beverage cold for 9 hours and hot for 3 hours. That makes this tumbler perfect for summer days on the deck or chilly winter days at the campsite with your buddies. Say cheers to your desired temperature and a beverage with personality! Stainless steel. Vacuum-sealed and triple insulated. BPA-Free and Phthalate-Free. Features slip-proof, silicone bottom. Sliding, spill-resistant lid helps you stay tidy.