I forget the exact model I think it may be the P-38 version, designed for a short wheelbase recumbent. It works great. However, I m still undecided on the relative benefits. I think it probably does make the trike more aerodynamic. Aesthetically, the reviews are mixed.
Some people think it s really cool, and some don t like it.
On chilly days, it does help to break the wind. I haven t tried it yet on a rainy day. For now, I think I ll leave it on. This picture shows some small pads that I ve added as extensions to the seat. These are adjusted to catch my shoulders.