First, know that this cover doesn't fit only the H-D models listed. It fits well on the factory saddle on my 1981 Goldwing, and would probably fit a lot of other saddles out there. Just measure and if your seat is same or smaller than the dimensions listed, it fits. The cover is waterproof so far although I haven't tested it in a heavy rain yet. It's fully urethane coated on the inside, so it should keep all the water out. Good item to keep on the bike, and it rolls up really small so it'll fit anywhere.