I can recommend the Thermo Soles. So far I have used 6 times. Race morning at 05:45 clock with the pedelec to work. There are 44 Km and it takes me almost two hours. At temperatures between 0 and 5 degrees, I always had cold feet, also with overshoes. With the Thermo Soles is over the. Now to wait and see if they last long enough. So far I am very satisfied.
22:06:14: Charging the soles is becoming increasingly difficult because the connection between the charger cable and sole somewhere has a loose connection. I have long with the plug, which leads into the sole, fiddle before the light turns green from the charger to red. (Characters which is the sole loaded). A great pity.