Product available with different options Merino wool Lasting merino socks FWN FWN-816L CZK440 FWN is a thick crew sock intended for cold winter days. It contains merino wool from 16 microns. This is a unique silky soft material that provides excellent thermal insulation in addition to having moisture removing properties. The sock is made of a two-layer and smooth knit. MATERIÁL: 85% MERINO WOOL, 5% NYLON, 5% SILTEX, 5% SPANDEX View