Product Details  100% Merino wool , men's undergarment  1) 100% merino wool underwear 2) Micron: 17.5~20.5 3) Weight: 180~320gsm 4) Fabric: rib, single jersey, interlock, terry 5) Sewing: flatlock  Machine washable,won't hold odors like synthetics, extremely soft, won't itch or irritate skin, natural stretch for a comfortable fit.  We are specialized in producing and trading wool and cashmere products, Please give us your requirements in detail, we can make them as per your design.