HIGH SIERRA MULTI-SPORT HYDRATION BACKPACK or can be used as a small backpack 2L or 70oz reservoir with easy fill top (New) Great for biking, Hiking, Skiing, or almost any outdoor activity. Main compartment, with special thermo-silver insulation to hold reservoir, extra gear and a bicycle pump sleeve for small pump Zippered expansion gusset for increased capacity. Tuck-away mesh sport flap holds a helmet. Front accessory pocket with molded bicycle tool organizer and MP3 player headphone port and extra gear VAPEL mesh AIRFLOW padded back wicks moisture. S-SHARP, VAPEL mesh adjustable backpack straps have a wide neck for added comfort. Easy-access cell phone pocket on backpack strap. Adjustable VAPEL mesh waist belt tucks-away into its own pocket when not in use. EASY-ADJUST sternum strap system stabilizes pack. Reflective loop holds a bike LED blinker for safety. Elastic shock cord and monster hook are great for attaching accessories. Size: 17.5" x 7.5" x 4" to 6.5" Expanded Pack Capacity: 550 Cubic inches / 9.0 liters Materials: Mini-Hex Ripstop/Waffle Weave Excellent new condition condition with no use $60 Firm ****************