HydraPak Stow 500 mL: Fill. Drink. Pack. Repeat. With durable construction and minimal design for easy packing, the flexible Stow 500ml helps make all your adventures the best they can be. An easy-open flip cap cover protects the spill-proof nozzle when not in use, bail handle for comfortable carrying and attachment, and a weight 80% lighter than most hard bottles, and you’ve got a perfectly pocketable bottle.