Just a heads up. Fotodiox softboxes with an adapter for Genesis will not fit the Genesis strobes. It is the right type of adapter but is just so poorly made that it will not go onto the strobe. I just ordered and received two of them and neither will go on. A couple of years ago I bought their Octobox and have been very pleased with it but apparently they are getting the adapter from another source now. The softboxes themselves are good enough quality for the price so I am going to get the Norman adapter from B&H. Just wanted to let anyone who may be considering Fotodiox for Genesis that you will have to buy another adapter so figure that cost into it to decide if you are getting a good price on these boxes.
The Norman adapter is $20 at B&H.