The Immersion Research Royale is a rand based spraydeck with a lip that sits on the outside of the rand.
There have been a few comments on the net questioning how this would actually work.
These images show how the lip does work and gives an additional seal to help prevent water getting to where it shouldn’t.
Well here it is. The spraydeck lip does work really well. A full review of the Immersion Research Royale will be landing shortly.