This is the best piece of luggage I have ever owned! I have taken it to rural areas in Brazil, Mexico, Zimbabwe, Jamaica, and Namibia. It has never frayed or ripped- and that is saying something after being tossed around by baggage handlers and dragged over rocky roads. Besides being tough, this bag is designed very well. You will have to watch the weight limit of the airlines- but if you are an elite member of any frequent flyer program they usually waive any over weight fees so it is not a problem. One of the best features is the big U shaped opening right on top. This is perfect for dropping in the things "you forgot to pack". You don't have to open the whole thing again after you have tied down and clipped the sides snug. There are 2 outside pockets that have zippers and all of the zippers are the double kind that you can put a luggage lock on.
The bag pulls easily and is not prone to tipping over. The backpack option is great, although I am too small to use it. I had one of my guy friends try it and they had no problem. I highly recommend this High Sierra rolling duffle bag!