Purchased the circulator seat pad and fitted to the sundowner deep bucket seat and was pleasantly surprised that it does what it's meant to.
Me & the missus went out for about 100 k's yesty arvo and stopped her from moving around trying to get comfy and actually has a cooling effect. Thought a bit overpriced at about $190 shelf price for both pads but the missus likes it so I'm happy.
http://www.harley-davidson.com/gma/gma_product.jsp?PRODUCT%3C%3Eprd_id=845524448774082&default=none