Ice Shaker's 26oz. Flex Tumbler is a high-quality, insulated, stainless steel cup that's designed to keep your hot drinks hot for up to 12 hours and your ice-cold drinks cold for 30+ hours making it t more→he perfect cup for water, coffee (hot and cold), iced-teas, smoothies, wines, beers, cocktails, juices, sodas, and more! Constructed from premium, kitchen-grade stainless steel, the 26oz. stainless steel bottle will not absorb odors and is double wall vacuum insulated to keep your hot drinks hot and ice-cold drinks cold while preventing condensation from building up on the outside of the bottle. For easy measuring, the 26oz. Flex Tumbler has internal 5oz, 10oz, 15oz, and 20oz. measurement lines