It's the OEM seat with custom foam and a custom cover done by Ron Erwin of Erwin’s Custom Interiors
Comfort has not been an issue for me with ANY seat so I'm not sure if others would find it more comfortable. The foam is harder than the OEM foam so my seat is firmer. If I wanted softer foam, I can get it. Hard is fine for me.
By eliminating the "hump" I sit back farther when street riding but can still ride forward on the dirt. Also, in my "street" position the seat height is about 2" higher than OEM and since I'm farther back it gives my old arthritic knees some relief.