8 oz./yd (US) 13.3 oz./L yd (CA), 50/50 cotton/polyester, 20 singlesHeavy Blend collection is now made with finer yarns and new MVS Air spinning technology, that improves the fabric by reducing pilling, enhancing durability and creating a smoother printing surfaceClassic fit1x1 rib with spandex for enhanced stretch and recoveryTear away labelCPSIA Tracking Label CompliantProud 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 by a mill who partnered with Fair Labor Association and was made in a facility that is WRAP certified.