The Duro 1.5 Running Backpack from Osprey was designed for running, ideal for those who like to run fast and light. This vest-style backpack allows for a comfortable fit and reduces bouncing of the pack. It has two adjustable chest straps. Of course there is an integrated water bag pocket. There are also runner-friendly gadgets like an LED light loop to keep you visible and reflective graphics. 2 adjustable, removable chest straps. Integrated water bag pocket. Included: 2x 250ml Soft Flask bottles with spout and extension tube. Stow-on-the-Go System™ for attaching poles to pack. Multiple PowerMeshTM pockets. Front zippered pocket. Side stretch mesh pockets. Carabiner for keys. LED light loop.