and whipping winds

simply double up your gaiter for an extra layer of insulation

and energy bars

Top zippered pocket with reflective attachment points

and it can stand up completely unsupported

Osprey Exos Pro 55 Backpack Size:Medium/Large and whipping windsNearly a pound lighter than the Exos 58 and featuring a more fine tuned adjustment system, the 55 liter Exos Pro is the most comfortable ultralight thru hike backpack in its weight class. A highly ventilated AirSpeed backpanel supports light loads with ease while maintaining maximum airflow across your back, making it an ideal pack for your most long distance endeavors on the Appalachian Trail, Pacific Crest Trail and beyond. Features Removable,