Powersocks Heat Fusion Men are heated ski socks for men. 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 without batteries. Find all compatible batteries by clicking here. Three heat levels are available, to adapt the heat to your needs. TECHNICAL SPECIFICATIONS Breathable socks with tight fit Quick and easy attachment of batteries with snaps. Heel and toe reinforcements Heat Fusion technology: for diffusion and heating all around the toes. CARE INSTRUCTIONS Remove the batteries before washing the socks Turn the sock inside out before washing Wash the socks in the washing machine at 30 maximum with a low spin. Do not use bleach Do not use fabric softener