18.5 micron Zque? New Zealand Merino wool; Lightweight rib knit; 150 g/m2 * Semi-fit, 7.5"" Zip neck with locking zipper pull, Arm pocket with concealed zipper * Tag free labels, Flatlock Seams; Set in sleeves, Wide sleeve cuff detail * 9"" Zip neck with locking pull; Stripe detail * Fiji