6 oz., 100% cotton; Athletic Heather: 90% carded cotton, 10% polyester; Heavyweight combed ring-spun cotton with superior softness; Made with sustainably sourced USA grown cotton; Seamless 1x1 rib collar; Shoulder-to-shoulder taping ; Double-needle hemmed sleeves and bottom ; Tear away Label ; Eagle R logo embroidery patch at left hem sleeve; Russell Athletic styles are manufactured using sustainable protocols which are measured and reported annually by Fruit of the Loom, Inc.; Russell Athletic styles are manufactured with the commitment to enriching lives for people and communities which is measured and reported annually by Fruit of the Loom, Inc.