This big 26-oz. Kong Vacuum Insulated Tumbler is made of food-grade stainless steel, the double walled piece of drinkware keeps iced drinks cold for over 24 hours and hot drinks will stay hot for over 2.5 hours. It's vacuum insulated, BPA free. Without a lid, the capacity increases by four ounces. It's perfect to use with or without the included oversized straw. Gift box included.