These bold, colorful tumblers are made to keep you hydrated in a fully functional style. Ideal for car commutes or workouts at home, it has a built-in flip straw for easy & effortless sipping. Snap it shut & the double-wall vacuum insulation will keep your drink extra cold for hours. To help you live a sustainable lifestyle, the IceFlow Tumbler is made in part from recycled plastics sourced from discarded fishing nets, sparing our waters of plastic waste. Stanley prevents nearly 100 pounds of waste from entering our waters per every 1, 000 IceFlow manufactured.