4.2 oz., 100% combed and ringspun cotton; 30 singles; Heather colors are 52% combed and ringspun cotton, 48% polyester; Triblends - 3.8 oz., 50 poly, 25% combed ringspun cotton, 25% rayon, 40 singles; Unisex sizing; retail fit; Cross over "v" at neckline; Sideseamed; Tear-away label