... a second skin. Main merino wool fabric : MaterialConstructionWeight Fineness100%Merino Wool S/J150gsm-170gsm 17.5micron100% Merino Wool S/J150gsm-200gsm18.5micron100% Merino Wool1*1 ... of New Zealand & Australia, natural superfine merino wool (17.5Mic ~ 18.5Mic), after wool top’s mercerization, the product is soft, plump, flexible ...