Mammut MTR 201 Hydration Pack – 427cu in
Mammut MTR 201 Hydration Pack – 427cu in

Weighing in at an ultralight 7. 6 ounces, the Mammut MTR 201 Hydration Pack qualifies as the world’s lightest trail-running backpack. This hydration pack features breathable, fast-drying VenTech material to combat the nasty, sweat-logged back panel often found after a long-distance day on the…

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