Here are the Prince Renegade squash shoes.
I think Mathieu Castagnet was wearing these:
Photo via Steve Cubbins →
Over in the States they have this blue guy, called the Renegade LS. The LS stands for Lightspeed.
There’s another shoe that looks pretty cool called the Prince Renegade 2 LS. This is marketed as a tennis shoe but it has non-marking soles so it could be used for squash.