I am in love with my Osprey Ozone. I do carry on only and try to pack as light as I can. The Osprey Ozone only weighs 2.2 lbs! It is the lightest bag I have found. I only allow my packed bag to weigh 16lbs and, yes, I weigh my clothes so I can keep my bag at 16lbs. The Osprey has a roomy interior, two net compartments on the inside flap good for underwear and socks and two big outside zipped pockets good for travel documents, iPad or laptop and a coat in the other one in the front of the bag. There is also a small pocket on top near the handle where I put my 3-1-1 bag so I can easily take it out for TSA security. The frame is sturdy and I love the big wheels as it rolls very smoothly. The Osprey is a sturdy bag without the weight. I highly recommend it if you are looking for the lightest carry on on the market.