I bought this thinking it would be smaller (I guess that's what I get for NOT using a measuring tape) and was delightfully surprised at how large the bag is.  I packed for 10 days with room to spare!  The bag still fit in the overhead compartment, which was great.

I did not have any trouble with the bag tipping over as some people did, but I did have trouble with the side compartment zipper splitting during the first trip I took with the bag.  That's pretty lame, if you ask me.  However, I will use the bag again since I bought it.  I'll run it into the ground!

Overall, for the price, I'd say it's a good purchase.  But it doesn't seem like it's made to last.