Expression Tees Straight Outta Niners Nation San Francisco Crewneck Sweatshirt 50% Cotton/50% Polyester Welcome to Sack Francisco, California Don't go without this Niners Nation shirt for the big game! Printed in the U.S.A. using top quality garments for comfort and style. Recommended Care Instructions - Machine wash warm, inside out, with like colors. Only non-chlorine bleach. Tumble dry medium. Do not iron. Do not dry clean Our Adult Crewneck Sweatshirts are 8 oz. preshrunk 50% cotton/50% polyester fleece knit. They are made with an air-jet yarn for a softer feel and reduced pilling.