The Glovii are just amazing. The product material is made by using high quality Ortholite material, which achieves a soft, comfortable, ventilate consumer experience. The heating element spread in the centre of insole will evenly distribute the heat. You need nothing else for the feeling of the full comfort. The Glovii will take care of your comfort and will let you forget... about frozen foots. The heating pad is made of strong and flexible carbon fiber composite material. Universal size lets you to adjust insole to your shoes. The energy needed to heat the insoles is provided by two durable batteries. Their capacity allows for maximum 7 hours of work. The control of the heating is carried out through the easy to operate remote controller. The adjustment range of the heating allows for obtaining 33%, 66% or 100%. Battery charging is carried out with use of a dedicated network battery charger and lasts about 6 hours. Therefore, after an entire day of fun on snow, you will regenerate your accumulators at night in order to use the additional warmth on the next day. So forget about frozen foots, you have a solution at your fingertips.