4.5 oz., 100% Ring Spun Cotton; Graphite Heather and Safety Green are 50% cotton, 50% polyester; Heather Irish Green and Heather Royal are 35% cotton, 65% polyester; RS Sport Grey is 90% cotton, 10% polyester; High-stitch density for smoother printing surface; Taped neck and shoulders; Tear away label; Double-needle sleeve and bottom hem; Seamless 3/4" collar; Only size 2T sideseamed; CPSIA Tracking Label Compliant; Gildan's manufacturing process utilizes 45% renewable energy; Gildan’s Community