The socks fit perfectly when cycling, which is not a foregone conclusion because of the motion sequence. Many socks do not with the constant rolling motion of the foot and push unpleasant to the tendon sheath with the well-known consequences. The socks fit perfectly and do not slip without pressing it. This is important with the bicycle shoe, which is why the woolly tennis sock separates directly. With respect to the heat, it is primarily on the right shoe. However, the socks are also a piece over the shaft and there I do not feel any unpleasant Windchill. Otherwise they versachen no sweaty and not fluff during use or after washing. Conclusion: Optimal!