5.2 oz./yd (US), 8.7 oz/L yd (CA), 100% ring-spun cotton, 31 singles. Sport Grey is 90/10 cotton/polyester. Semi-fitted. Clean finished placket with dyed-to-match buttons . Rolled forward shoulders. Side seams. Tear away label. Gildan partners with Better Cotton to improve cotton farming globally. Made with OEKO-TEX certified low-impact dyes. This product meets the following Sustainable Style subcategories - Sustainable Manufacturing - This product meets the OEKO-TEX Standard 100. Socially Conscious Manufacturing - This product was made in a facility that utilizes the Higg Index and has implemented Level 2 practices or above, was made by a mill who partnered with Better Work, Fair Labor Association and was made in a facility that is WRAP certified.