|Hanes Mens A-Shirt Undershirt 3 Pack - White 372 fiber content is 100% Cotton. Hanes Mens A-Shirt Undershirt 3 Pack - White Hanes sleeveless tee offers smooth custom fit, thanks to subtle vertical ribbing. 100% cotton knit feels soothing against your skin. (It\'s even preshrunk for lasting shape.) Two-ply neckband r. Hanes Mens 372 comes with 3 Undershirts per Pack.