Osprey Packs Porter 46 Backpack - 2800cu in
As with all Osprey bags I have owned, this thing is bombproof, super durable, and very comfortable. I loaded it up with about a weeks worth of clothes and accessories and had plenty of room to spare. I plan on taking this bag with me as my one and only carry on for a 2-3 month trip to europe. I highly recommend this bag for travel.