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. Specifications Spec Value XS – Body Length 27 1/2 S – Body Length 28 1/2 M – Body Length 29 1/2 L – Body Length 30 1/2 XL – Body Length 31 1/2 2XL – Body Length 32 1/2 3XL – Body Length 33 1/2 4XL – Body Length 34 1/2 XS – Chest Width (Laid Flat) 17 S – Chest Width (Laid Flat) 19 M – Chest Width (Laid Flat) 21 L – Chest Width (Laid Flat) 23 XL – Chest Width (Laid Flat) 25 2XL – Chest Width (Laid Flat) 27 3XL – Chest Width (Laid Flat) 29 4XL – Chest Width (Laid Flat) 31