Check out the Arctic Shield gloves. I bought a pair of gloves and boot insulators at Bass Pro Shops during their fall promotion. There was a guy there demostrating the boot insulators by packing people's feet in dry ice. He explained that the material inside is not an insulator that slows heat loss, but a heat reflective that reflects your body heat back toward your skin. Basically, the same idea as space blankets.

www.arcticshield.com