hollington uses only the finest merino wool to make these socks. It is combed in Italy to obtain a high quality thread.For these socks, we chose an incredibly fine merino wool thread (19.5 microns) made exclusively for us in Italy. This thinness of the yarn gives your socks an exceptional durability, much appreciated for everyday use. They are knitted on a 200-needles machine! Very soft thanks to the selection of the longest wool fibres, they also offer excellent thermoregulatory properties. Indeed, merino wool is the favourite of outdoor athletes: it is very warm but does not "overheat", and it effectively wicks moisture from the skin. Here are the ideal socks to keep your feet warm in winter and cool in summer.