This convenient handheld flask is a great piece of add-on hydration for short to mid-distant runs. Ergo flask with TPE grip to prevent sweating and Push-Pull Blast Valve cap for easy drinking. Fully adjustable hand strap with chafe-free thumbhole enables grip-free running. Expandable zippered pocket for nutrition, keys, and small essentials. 12 oz. Weight: 3.4 oz.