4.2 oz., 100% combed and ringspun cotton; 30 singles Heather colors are 52% combed and ringspun cotton, 48% polyester Triblends - 50 poly, 25% combed ringspun cotton, 25% rayon, 40 singles, 3.8 oz. unisex sizing; retail fit cross over "V" at neckline side seamed.