We absolutely love our Beach Sail and it works very well. We are snow birds in Marco Island for 4 months and the wind on the beach has ruined our previous umbrellas so when we saw yours on line it looked like it would fit our needs exactly so we won’t have to continue to buy new umbrellas. We have used it daily since we received it and it works great. On a normal beach day, the wind on our beach is approximately 5 to 15 knots (17+ MPH). However the wind the other day increased to more than that. Our neighboring umbrella users leaned them against the wind and they still showed signs of buckling and had to sturdy them even more. My beach sail umbrella, worked well with the wind, and is very simple to adjust it as the wind changes direction. I sat under it comfortably out of the sun, and just read my book. One guy and his wife were giving me the watchful eye as they saw our set up. My wife and I go to the beach often, and are now enjoying your product. We will gladly send all inquiries that we get from the beach to your web-site.