AS Colour Organic Muscle Singlet Regular fit Crew neck Mid weight, 180 GSM, 24-singles 100% combed organic cotton (marles 15% viscose) Quality cotton grown without the use of herbicides or pesticides - GOTS (Global Organic Textile Standard) certified Raw armhole edges, neck ribbing with twin needle stitch, side seamed, double needle hems, preshrunk to minimise shrinkage