1) 100% merino wool2) Machine washable3) Weight: 180 230gsm4) Sewing: flatlock100% Merino wool, machine washable,won't hold odors like synthetics, extremelysoft, 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.