Sturdy, adaptable, easy to use. I had a High Sierra wheeled backpack before, and wanted a replacement. Basically I like that the backpack can be zipped on/off; this is useful when travelling by air, as you can check it in as one bag & separate it when arriving at the desination (making it 2 bags). The wheels on this latest model are better than before, the zip-off backpack is bigger. My old one was black, I like the 2-toned grey because you can pick your bag out easily, whereas most travellers have black luggage. I would recommend it to anybody.