These were purchased for me as a gift and though I was a little skeptical due to some of the reviews, they served my purpose well.  The largest one fits within airline guidelines for checked luggage and I found it was more than enough space for our trip to San Diego.  They come with locks attached, but they are a little flimsy.  I didn't need them, so that was not an issue for me.  There are many, many patterns and colors to choose from and I would recommend them to anyone looking for a sturdy, stylish luggage set.  They went through flight changes, being checked and tossed around and were just fine at the end of our trip.