3.8 oz./yd² (US) 5.8 oz./L yd (CA), 100% polyester moisture-management/antimicrobial performance fabric Knit collar with three-button placket Back neck tape Sport shoulder for maximum movement Double needle stitched bottom hem Tear away label This product meets the following Sustainable Style subcategory - Socially Conscious Manufacturing - This product was made in a facility that has partnered with or is accredited by the Fair Labor Association.