Standalone neoprene gaskets

Does anyone make neoprene gaskets with hook and loop so a person could add those to their already bought raingear to give them a splash jacket/pant effect?

I don’t think hook and loop would work.
It would leak, and the point of gaskets is to get them so they do not leak.

Let me clarify
I see splash jackets that have adjustable neoprene cuffs and hems. How are they adjustable? I was thinking they had overlying hook and loop closure to make them adjustable. So, I was looking for some neoprene gaskets to add to other rainwear. Hook and loop alone wouldn’t work, but if it’s attached to neoprene in a 4 inch width or so it can possibly have the same effect as a splash jacket or pant.