Hydrate effortlessly with this 500ml flask, designed for compatibility with vestpacks. A WingStay™ removable stabiliser prevents bounce, while a wide-mouth opening makes it easy to load ice or mix in electrolytes. A high-flow valve, easy-grip twist cap and tapered shape simplify hydration. Crafted with durable TPU and RF-welded seams, and compatible with the UltraFlask Filter Cap (sold separately).

FEATURES

WingStay removable stabiliser prevents bounce
Large 42mm opening for quick ice and drink mix loading
Tapered shape for easy pocket loading
High-flow, self-sealing bite valve
Durable TPU- and RF-welded seams
Easy-to-grip twist cap

SPECS

Volume: 0.5L

Dimensions (H x W x D cm): 26 x 9 x 5 cm

Weight: 0.04 kg

OSPREY Hydraulics™ 500ml Soft Flask

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