Description Osprey Echo Daypack Pack up your windbreaker, binoculars, maps and lunch, climb to the top of the Grand Canyon and belt one out for an amazing Echo! For basic trail hiking and urban cruising, the Osprey Echo Backpack provides all you'll need week in and week out, including a zippered CD/MP3 pocket on the backpanel, easy panel loading with a center water resistant zip, ice ax loop, internal hydration sleeve with exit port, 32 oz. water bottle pockets, and safety light clip-ins. Playe your tunes, sport your gear and keep hydrated with the Osprey Echo. Features: S/M - 2 LB. 0 OZ. / 0.90 KG. M/L - 2 LB. 3 OZ. / 0.99 KG. S/M - 1100 CU. IN. / 18 L M/L - 1200 CU. IN. / 20 L Rigid framesheet CD/MP3 pocket Hydration pouch Dual pockets for water bottles