Specs: Capacity: 12 oz/355 mL Technology: Push-Pull Blast Valve(TM) cap for ease of use Features: Fully adjustable hand strap with thumbhole enables grip-free running Ergo flask with no-slip grip fits hand seamlessly Expandable zippered pocket holds nutrition, keys and small essentials. Running Hydration Gear from the Nathan brand.. Ready to give it a try? Visit www.dickssportinggoods.com to learn more, explore additional product details, and check availability at a DICK'S Sporting Goods store near you. Place your order online for fast shipping or in-store pickup - DICK'S makes it simple to find exactly what you need..