Definitely agree with DM, the Flexifoil Nexus was the worst kitesurfing by a long shot, at least the wipi tarp kite flew ok when it was windy, the nexus just incredibly hard to control and did not relaunch, first test flight in Botany bay years ago required a rescue.
There was another kite that looked similar and was made of a "hypalon" type material, the same stuff inflatable rib boats are made from, it was called the Seasmik or something. It had no internal bladders in the inflatable parts, which they marketed as a key superiority, problem was how to fix a puncture, but the thing was horrendously heavy and flew like a car door.
I think the biggest selling kite for several years has been the F-one bandit, they built an entire brand on one model of kite and from what I know F-one is one of the biggest brands globally.

This video of the Nexus is the best way to get an idea of what this contraption was like, It had an inflatable LE and TE with flexible solid (heavy) battens.
You can see from the seasmik and the nexus that bridles were an idea that got rebirthed a decade later.