Men's Merino Wool Tank TopThe lightest layer in the lineup. Made from 95% merino wool and 5% spandex at 150 GSM, this tank top is built for warm weather and high output activities. Wear it to the gym, on a summer hike, or as a base layer under a long sleeve when you want extra moisture management without extra bulk. The 17. 5 micron fibre is extra soft noticeably softer than our midweight pieces with a bit of stretch that moves with you. It wicks sweat, resists odour, and