I used it yesterday for the first time during the fierce Noreaster when we had here in NYC with winds of 45-60 MPH.  I was out shopping in the middle of it and saw at least a dozen broken ones scattered about.

So when this one turned inside out three times and I figured it was going to be just as useless as the cheap ones you buy on the street here for $5.

Instead I simply closed it and reopened it and it was EXACTLY as strong and intact as when it arrived.

I am probably going to buy a few more as gifts.