Finally, a winter sole which keeps its promises! I drive really like racing. As a woman already begin with me because of 15 ° to the feet become cold. Thus, the cycling is so far always been a problem in the winter. The feet were already at 5 ° cold within an hour, so the bike rides around the 2h a real pain were. The problem was actually getting the cold that climbed from the bottom through the shoes, overshoes so only partially prevented the cold. With the new winter sole in connection of overshoes feet remain over 3h hours warm. What is important, the cold can not penetrate from below, ie on the clipless pedals. The fit of the sole was also a perfect fit for my size. I had to adjust anything, the sole fits perfectly into the shoes. Absolutely great product, thank you tour for the info. She holds really delivers what it promises and troublesome batteries from heated insoles you do not have too rumschleppen with.