Polarmaxs Core 3.0 Tight (3P12Y/3P32V) is a high-performance Tight baselayer that provides unrestricted range of motion and advanced Acclimate Dry technology to deliver superior moisture wicking and quick drying to keep you warm, dry, and comfortable. Performance, regardless of the conditions! Clean Seam sewing reduces irritations and improves comfort! Polarmaxs proprietary Acclimate Fresh anti-microbial keeps you odor free even when youre perspiring all day! Polarmax really are your go to Layers for Life!