Heated grips

[darrsi]

They also come in a variety of types now - they do sport ones which are much thinner than normal and don't really feel like chunky heated grips to be honest, or touring ones, which are slightly thicker and have gel bits for added comfort!

I personally wouldn't go thinner, simply because they'll wear out quicker.
I remember years back I had a pair of gloves with quite a rough textile on the palms that ate into the grips really quickly as well.
Each to their own though.