... single jersey ,1x1rib ,interlock6: machine washable Main merino wool fabric we use:MaterialConstructionWeightFineness100% Merino WoolS/J120gsm17.5micron100% ... Merino WoolInterlock250-280gsm19.5micronmain products we supply:100% merino wool , wool blended, cashmere, cotton, modal, soybean,bamboo underwear ... T-shirt, cashmere, vest, boxer,knitted tube,hat. Production process: merino wool wool balaclava