The most functional and comfortable insulated Flask ever! The ergo-shaped SpeedDraw™ Flask with Fire & Ice™ technology allows for both the most natural grip possible and easy-squeeze access to fluids. Double-walled construction keeps fluids cooler 20% longer than other insulated bottles. Fully-adjustable hand strap with thumbhole enables grip-free running. Large, expandable, zippered pocket sized to fit an iPhone®, keys, cash, food, and more. 18 oz. Wt: 3.9 oz. (w/bottle).