.....................or alternatively you can get some cheap Symtec heated grips and use Tucano overmitts. Thery look crap but boy are they effective. No more wet hands and you can use thin gloves all year around. I always take my Tucanos with me if I think it's gonna rain and putting them on takes a few minutes. Pack last thing on the bike as they are quite light and they deflect the wind and rain off your hands. I prefer this set up as you have much easier feel of all the buttons and switches.
