5.3 oz./yd² (US) 8.8 oz./L yd (CA),100% cotton, 20 singlesSport Grey is 90/10 cotton/polyesterHeather colors are 50/50 cotton/polyesterInnovation you can feel. Made with 100% U.S. cotton and the latest breakthrough in soft cotton technology, the Gildan® Heavy Cotton family has been remastered for improved printability, quality and comfort you can see and feel.Semi-fittedRib collarTaped neck and shoulders for comfort and durabilityCap sleevesSide seamsTear away labelProud member of the U.S. Cotton Trust ProtocolMade with OEKO-TEX certified low-impact dyesThis 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 Fair Labor Association and was made in a facility that is WRAP certified.