Quote Originally Posted by 98valk View Post
The stock cover may leak a bit. But the stock seat has a plastic layer on top of the foam just under the cover. That keeps the sponge from getting soaked. Big difference between just the cover being wet and the sponge getting saturated.

I had an Ultimate seat on my Valk that got caught in the rain overnight. I got to ride the next 12 hours with a wet butt! I would take the discomfort of the dry plastic layer all the time vs riding on a soaked seat all day. But that's just me.
Sooooo...maybe the real reason the Ultimate is more breathable is not the material itself but that the plastic layer protecting the foam is missing. What about that Ultimate?