Hang Peng wrote a review of Arc'teryx Spear 25 Daypack -1464cu in on December 30, 2011
The back support, with dual aluminum stays and the thick materials make the pack too heavy. Granted the material will make it durable. The back panel and stays are suppose to handle heavy load, but the thin and insufficient shoulder straps make carrying heavy load tiring and painful. Placement of the shoulder straps is also uncomfortable for people with wide shoulders.