... 3)145gsm ~400gsm 4)4 needle flatlock/3 needle overlock Top /Pant /balaklava : 220gsm ,19.5micon ,100% superwashed merino merino ... natural superfine merino wool (17.5Mic ~ 18.5Mic), after wool top’s mercerization, the product is soft, plump, flexible, delicate, smooth ... ~400gsmSewing machine:4 needle flatlock/3 needle overlockMerino Wool Underwear-Top & Bottom Merino Wool Baby Wears Merino Wool T-Shirt- ...