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; sideseamed;