I had an umbrella that folded small but was large enough to do some good when it opened.  I had it several years, but it finally broke.  I tried to fix it, but the metal was bent and it just got worse, so threw it away.  I ordered this one, and so far it has been a good one.  It opens and closes nicely, is large enough to be useful and is strong enough to withstand some pretty strong wind gusts.  I'm not sure how long it's going to last, but it came with a lifetime warranty, so I kept all the paperwork, just in case I need to file a warranty claim in the future.

My only negative is that the button to open/close it is in such a position on the handle that one must be careful not to accidently close it while walking under it in the rain.  It's easy to do.

Overall I would recommend this as a good solution if you need a larger unbrella that folds small enough to carry in a brief case.