100% polypropylene underwear/baselayer. 1,light weight:120g/m2 pique 2,quick dry,thermal,anti-bacterial,odour free 100% polypropylene ... underwear/baselayer. Material:100% micro polypropyleneFabric can be 120g to heavier weight.Fabric can be pique ... 3,Polypropylene also retains more heat than any other fabric so you stay nice and warm.4,Polypropylene have ...