Polarmax®’s Core 3.0 Zip (3P11D/3P31D) is a high-performance Zip 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! Polarmax®’s proprietary Acclimate® Fresh anti-microbial keeps you odor free even when you’re perspiring all day! Polarmax® really are your go to Layers for Life™!