I always use two layers. One thin layer like these: http://www.amazon.com/Metog-Winter-Outdoor-Sports-Fleece/dp/B015T4WMUM/ref=sr_1_1?ie=UTF8&qid=1453672958&sr=8-1&keywords=gloves

Then another layer of thick gloves. This has served me well during skiing, camping in the snow, and cold South Dakota winters.

I've seen some use these: http://www.amazon.com/Metog-Thinsulate-Thermal-Insulation-Mittens/dp/B018IN0GQ8/ref=sr_1_15?ie=UTF8&qid=1453672958&sr=8-15&keywords=gloves

Flip the mittens back when you need to sign, then flip them back on when you need to be warm.