Wave goodbye to boring water bottles and coffee cups! The Corkcicle 16 oz Tumbler 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!