Waterproof heating system
Keep you feet warm in the winter or on your polar adventures with the eWool heated sock cover. It has a waterproof heating so you don't to worry about getting wet and you can even put them in the washing machine. The sock goes up to just below the knee covering the calves but it only provides heat to the feet all around the toes. It has a open heel to fit all type of boots comfortably.
Comes with a single battery that can provide heat up to 8 hours on low heat mode, 5 hours on normal heat mode, and 3 hours on high heat mode. You can connect a second battery to double the heating time up to 16 hours on low heat mode. At a touch of a button you can tell which mode you're on via haptic feedback. To charge the battery you simply snap the plug into the magnetic contact.