High-performance baselayer jersey with tight fit and mesh panels for excellent function during high-intensity workouts. Recycled fabrics.?Supertight fit?Thin, lightweight and elastic fabric that is channel-knitted to trap air and provide warmth?Coolmax-Air fiber against the skin enhances cooling and moisture transport?Flatlock seams that follow body movements?Mesh inserts at armpits for enhanced ventilation where itÂ's most needed?This product is made with SeaQual polyester that is produced from recycled plastic from the ocean?Crew neck