Fill. Drink. Pack. Repeat. With durable construction and minimal design for easy packing, the Hydrapak flexible Stow™ 500ml helps make all your adventures the best they can be.
Part of our ultra-light series, the Hydrapak Ultraflash Speed 500 ml is so light, you might forget you brought it. Weighing in at just over an ounce, it’s optimal hydration, no matter what kind of runner you are.
