Used this today with some strong wind gusts and it repeatedly turned inside out. Not a lot of fun waiting for a light rail with this thing turning inside out repeatedly.

This statement by seller is patently false.
4. High Quality:10 resin-reinforced fiberglass ribs that flex slightly to withstand powerful gusts without turning inside out

Maybe powerful is relative, but this umbrella doesn't perform in wind. I'm sure this item is fine for a normal rain day, but not usable with strong wind.