I can confirm that the Senz performs quite well in Chicago weather, even in the wind-tunnel areas. The problem, though, is that fabric is removed from the fron

I can confirm that the Senz performs quite well in Chicago weather, even in the wind-tunnel areas. The problem, though, is that fabric is removed from the front of the umbrella to create the wing shape, and the result is less coverage than an un-aerodynamic umbrella of the same handle-length. So your feet and pant-bottoms almost always get soaked in any situation where you would actually need an umbrella.