No more cold feet: With your comfortable shoe heater, your feet will always stay pleasantly warm from now on. Even when it's freezing cold and you're wearing normal low shoes in winter. Simply place the insoles in your shoes and strap on the ultra-small battery compartment with the discreet leg cuff. Just switch it on: you're already enjoying the cosy warmth. Ideal for sledging, snow hiking and at the Christmas market. Another plus: The EVA special foam has an additional cushioning effect when walking. Effectively prevents the feet from cooling down. Pleasantly thin and comfortable insoles. EVA foam: light, elastic and with good cushioning. Small battery compartment with on/off switch, each in comfortable leg cuff. Easy to cut to size: Fits all shoe sizes from 38-46. Requires 3 AA batteries each (please order separately). Includes 2 leg cuffs with battery compartment and German instructions.