Brand new and never used! Unisex One size fits most Adjustable sternum straps Moisture wicking stretch woven fabric with chafe free binding materials Breathable mesh shoulder straps 1.5 L Hydration Bladder Included One main zipper pocket on the back with additional smaller pocket Bottle pocket on the front for additional hydration Zippered phone pocket on the front Reflective hits for 360 degree visibility 60% Nylon, 40% Polyester Storage Capacity: 244 cu in/4 L