Flambeau Heated Socks Kit Medium
Works fine. The weather has not been that cold so I could rate how they work under winter/cold conditions. Battery life is short, very short if you run the socks on high.
The Flambeau Heated Socks Kit feature carbon fiber heating elements designed to keep your toes warm. Medium weight sock is designed for maximum balance between warmth and comfort. Wool, polyester, and cotton blend designed to pull moisture away from feet. The battery compartment is designed to sit just below your calf. Includes (1) pair of socks, (2) 3.7V Li-ion batteries, AC charger and dual mini-USB cord.
FeaturesFlambeau Heated Socks Kit - Medium