It's good to support a British business attempting to do something novel and new. On paper this is umbrella does exactly that, taking a long-established design and adapting it in a way that aims to make it better.
Unfortunately, the reality for me was an umbrella that solved one problem whilst creating another. In the time I was using it, I can honestly say that it didn't so much as threaten to blow inside out once. The claims the umbrella designers make about the product's resistance to wind were certainly true in my experience.
The problem was that in achieving it's sleek, wind-resistant form, it sacrificed the core function of an umbrella, that of keeping the person using it dry. I can't remember having an umbrella that resulted in me getting as wet as this one did. Because the sides are so narrow, it meant that my sides were always soaked in a rainstorm, as the umbrella offered little protection. It might not have blown inside out, but I think I would just prefer not to get wet.
After 6 months, I reverted to a more conventional design with a larger canopy. I'm no longer getting wet. I'll take my chances with the new one failing within a year. It was half the price of the Senz umbrella.