I recently flew from Utah to Miami for an Eastern Caribbean Cruise. I used this bag as my "personal item" in addition to my carry-on for the flight. It fits perfectly under the seat in the plane. I packed a small laptop (Dell E4200), my Kindle Fire, my Canon 60D camera (BIG camera), a blanket, and all my cash, passport, snacks, water bottle, etc. in the bag. Needless to say it was totally full and really heavy with all this stuff in it. But the strap was really strong and none of the seams gave out on me. I love that the strap has a quick adjust clasp on it. I could quickly shorten it (so it was easy to manage while balancing on top of my rolling luggage), and then lengthen it when I wanted to throw it over my shoulder. I also emptied it and used it at each of the cruise ports while shopping for all my souvenirs. Highly recommended!