Very nice girth!! I've seen them before in catalogs, although I don't know how much support they offer because a lot of it appears to be elastic and not leather. And it seems like it would itch the horse by the elbows. But you'll have to let us know what your horse thinks of it! I don't know the actual color of your saddle but it looks like a dark enough leather to match up with your new girth. It's kind of hard to tell whether the leather up by the buckles will be hidden by the saddle flap without it actually on your horse.
Hope your purchase is worthwhile!