Please buy the shoes so that your foot is approx. There is 0.5 to a maximum of 1 cm additional space in the shoe. To do this, measure the length of your foot by standing with your heel against a wall and then measuring the distance from the wall to your big toe. For this you calculate approx. Add 0.5 to 1 cm. Then you have the right size! Please note that US sizes do not correspond exactly to German sizes! Tip: The right socks in your boots are the most important thing! With the wrong socks you will get cold feet even in these boots. The best and warmest boots are of no use if the socks aren't right. Any moisture that develops (which cannot be prevented) must be immediately removed from the skin. We therefore recommend functional socks with Coolmax, Merino wool and functional fibers. In an.