lower fairings (lowers) are used on a lot of different bikes to help eliminate wind buffetting. They keep the wind from coming up under the outside of the tank which is a major source of the problem. More so than from a windshield on many bikes.
Memphis Shades has them for a variety of bikes.
As low as the ones in the pic are, I doubt they do much good, except to help with foot buffetting.
There is a guy here on the forum who made some that attach to engine guards and probably work pretty well. I think there is a vendor here that sells them.
Stay tuned, someone will show both.