Never worked for me
I need a pair of glasses, thought this was a deal for a scottish wifebeater at first glance.
I have a Fulton stormshield umbrella.Cost quite a bit,and claim it's great in the wind. Went out earlier and it constantly blew inside out,but corrected itself....mind you it is pretty wet and windy here in Keswick today. This deal one,is a fair bit cheaper,so I would have my doubts how good it can be.
Windproof lol quite a claim.