This is a brand new travel pack with day pack. I'm not certain how many liters it is not overly gigantic, but big enough for a couple month trek overseas. Probably in the 72 to 80 litre range.
All the modern features of internally adjustable aluminum frame, should couriers style strap, fully adjustable shoulder straps, back support & hip belt, locking zippers, document pockets, rain covers, cargo [air transport required] should strap cover, etc.
Retails for around $190. Asking $135. PM me with your email address if you would like to see more pictures of the set up. Located in Victoria, BC.