Stay hydrated without the hassle of a rigid bottle. The HydraPak Stow Collapsible Water Bottle is designed for adventurers, travelers, and everyday explorers who want reliable hydration in a lightweight, packable design. Available in 350ml, 500ml, and 1L sizes, the Stow flattens and rolls when empty, saving space in your pack, pocket, or bag — and it can even double as an emergency backup water container. Engineered from abrasion-resistant TPU with RF-welded seams, the Stow is tough enough for trails, festivals, airports, and city commutes — all while weighing under 2 oz, nearly 80% lighter than rigid bottles. The flip-top cap features a self-sealing silicone nozzle and is ergonomically designed to keep your water clean and your gear dry, whether clipped to a backpack or stashed in a jacket pocket. For backcountry adventures, the Stow is compatible with the HydraPak 28mm Filter Kit, making it a trusted choice for hikers, campers, and other outdoor enthusiasts. It’s also BPA-free and PVC-free, top-shelf dishwasher safe, freezable, and safe for warm water. Unlike many collapsible bottles that leak, crack, or retain strong odors, HydraPak designed the Stow to balance durability and portability. Backed by feedback from thousands of outdoor users, confidently head out on the trail, travel abroad, or pack light for your next camping trip knowing that the HydraPak Stow delivers hydration that adapts to your journey.