Born and raised among the tallest peaks of the Colorado Rockies, the Duro and Dyna Family has grown to support runners all over the world in various disciplines and terrain. Whether you'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.Features:- Pack-vest style fit with dual adjustable/removable sternum straps- Large quick-access secure phone pocket- Running pole attachment points - Reflective graphics and LED attachment points - Multiple quick-access stretch mesh pockets Specifications:- Weight: 0.34 kg- Liters: 6Backsystem:- Pack-Vest Style Fit With Dual Adjustable/Removable Sternum StrapsMaterials:- 320G Nylon Stretch Mesh