The Osprey Dyna 6 Trail Running Vest Pack was born and raised among the tallest peaks of the Colorado Rockies, the Duro has grown to support runners all over the world in various disciplines and terrain. Whether youA;&&';;re looking for a podium, fastest known time or beautiful activity as the sun rises, Osprey keeps you comfortable, in rhythm and hydrated no matter the distance. Stay hydrated whether you&';re training or running unsupported ultras. Women&';s Fit Specific Running vestpack with room for extra layers, Dual open mesh hip pockets for food/trashl Includes 1.5 Liter Water Reservoir LT. 100% mesh construction for full breathability Zippered rear pocket with internal organization bluesign approved 320g recycled nylon stretch mesh, PFC/PFAS-free DWR Small: 6 Liters, Weight .85 lbs, Fit Range 26-29.5 in Medium: 6 Liters, Weight .90 lbs, Fit Range 29.5-35 in Small: 6 Liters, Weight .94 lbs, Fit R