Lightweight and ergonomic, Nathan's 22oz handheld flask is the perfect training partner for longer runs. Add ice easily with the large cap opening and enjoy the high-volume flow of the Push-Pull Blast Valve cap. 22 oz / 650 mL ergo SpeedDraw Flask with Push-Pull Blast Valve Cap offers quick bursts of fluid Large cap opening to easily clean and add ice cubes Fully-adjustable hand strap with chafe-free thumb hole that enables grip-free running Expandable zippered pocket for running essentials Internal and External stash pockets for small items Fits most smartphones Storage Capacity: 10 cu in/0.16 Liters Weight With Bottle: 4 oz/115 g