I have terrible circulation to my extremities so about 3 minutes into a duel my fingers and wrist get cold and tend to cease up making aiming difficult. To solve this, I began looking around for a heat pad I could put underneath my mousemat, but no such thing seems to exist. However, on my adventure through the internet I came acrossv this http://www.amazon.co.uk/Reptile-Vivarium-Stic...amp;sr=8-4

It works perfectly and I highly recommend it to anyone who suffers from chilly fingers.