Vintage Valvoline Mechanics Shirt Single Stitch UniFirst Mens Medium 65% polyester, 35% cotton. Has some flaws: 3 buttons missing (easy fix), some minor stains and a snag on sleeve as pointed out in the photos. Very good for a vintage work shirt. *The detailed photos I provide for you are part of the items description and condition. Any questions, please ask. *All items ship within one business day.