They are not bulky but you may want gloves one size up if your current gloves are a tight fit. They use the latest infrared technology in a lightweight stretch material. There are no wires in the fabric - the whole fabric heats. So they are just like a thin glove liner. Check them out at Powerlet.  I got mine a bit cheaper on Ebay but sizes are limited. I also got a remote temperature controller which I mounted on my handlebars for easy adjustment while riding.
Cheers, Richard
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09 America, Staintune Pipes, K&N, Breathe, Hagon Nitros, AI & O2 removed, tune 20184 (modified), MTX-L a/f gauge
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