Kick Back with Kelty
Duffel bags are the worst; cumbersome, hard to carry, awful. Roller bags are nearly as bad; ever tried to haul one up a flight of subway stairs? No, for the savvy traveler, there is only one type of luggage: The huge backpack. Sure it's great for the woods, but it's even better for fitting a month's worth of clothing into the overhead bins.
Kelty official site