4.3 oz./yd², 100% combed ring-spun cotton, 30 singles; Ash Grey is 99/1 ring-spun cotton/polyester; Heather Grey is 90/10 ring-spun cotton/polyester; 100% cotton thread on color White; Relaxed fit; Classic width, ribbed collar; Taped neck and shoulders for comfort and durability; Side seams; Tear away label; CPSIA Tracking Label Compliant; Made With Respect Gildan partners with Better Cotton to improve cotton farming globally; Made with OEKO-TEX certified low-impact dyes; We reduce plastic waste by the removal of polybags from all products except color White; 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 Fair Labor Association and was made in a facility that is WRAP certified.