Powersocks Heat Fusion are unisex heated ski socks. Technical, soft and breathable, they efficiently wick away moisture thanks to their specific micro-channel construction. These heated ski socks also provide maximum comfort in the sensitive areas of the foot, namely the shin, calf and instep. Equipped with Moisture-Vent Technology, this ski sock efficiently wicks away moisture from the arch of the foot. Thanks to the macro-channels around the foot, moisture is guided away from the ski boot, making it easier for your foot to breathe. The Powersocks Heat Fusion offer a soft and pleasant warmth around the toes and provide up to 16 hours of warmth, depending on the type of battery used. The socks are sold with S-Pack 2400 batteries. Three heat levels are available, to adapt the heat to your needs.