... stink like synthetics,natural stretch for a comfortable fit.It's like a second skin. Main merino wool fabric : ... -280-400gsm19.5micron.21.5micron Shanghai Solarwool Apparel Co., Ltd Solarwool Apparel main products include 100% wool knitted underwear( ... superfine merino wool (17.5Mic ~ 18.5Mic), after wool top’s mercerization, the product is soft, plump, flexible, delicate, smooth ...