This MACPAC GENESIS back pack has done great service and still has many miles of travel left in it. Looks a bit rough - especially having my name scrawled down the side to fend off luggage thieves on my travels - but has no real wear and tear. The zip on outer day pack is no longer with us though I'm afraid. Not sure what the litre measurement is - I always thought it was 65 but the measurements inside back only go to 41. Measurements of frame are 63cm x 49cm