Downhill ski boots PURE PRO HEAT with built-in heating system Thermic that brings pleasant heat up on the slopes. Heating inserts with Merino wool lining have a built in batteries and control panel for the temperature regulation. You can choose from 4 heat modes through Bluetooth. Batteries can be charged with a USB cable that is part of the package. Adjustable skeleton flex allows to adjust the performance of the boots to every technique. Their Sensor Blade shell technology decreases the amount of material used, reducing weight and ensuring an incredibly effective transfer of energy into the skis. The boots are designed specifically for women’s feet to provide maximum comfort. Custom liner with merino wool insulation is thermoformable. Wool absorbs and maintained the produced heat which saves the battery.