100% certified cotton (preshrunk). Although these tees are preshrunk, we still recommend washing in cold water and air drying to help keep their wonderfully natural shape.
If you are laying the tee flat on a table, the approximate measurements from armpit to armpit are: (Small - 15 inches)....(Medium - 16 inches)....(Large - 17 inches)
Kids sizes: Small (6-8) - Medium (10-12) - Large (14-16)