5.4 oz./yd², 100% combed ring-spun cotton, 24 single 1x1 baby rib set-in collar with front coverstitch Twill tape at back neck Side seams Tear away label Due to the unique pigment dying process we suggest the following: Use methods and inks specific to avoiding dye migration When applying white ink, use a gray plastisol blocker under base, flash then poly white Responsible Supplier:  this product was made in a facility that is FLA certified.