Osprey Hydraulics 500ml Soft Flask Grips and a layer of moisture-wicking

and a layer of moisture-wicking fleece for a snug seal and comfortable fit

The precision-engineered Wolf Tooth Seatpost Clamp secures your seatpost and looks good doing it

Our Most Versatile Baselayer

A laundry list of features offers enhanced comfort and easy adjustments on the go

Osprey Hydraulics 500ml Soft Flask Grips and a layer of moisture-wickingExtend your range on the trail with this remarkably lightweight, durable and packable soft flask. Toting 500ml of mission critical hydration, it's lighter and more convenient than conventional water bottles and works seamlessely with the Duro Dyna series trail running vestpacks and handhelds. Stock up your aid station or maximize your pack's hipbelt. BPA free.