4.2 oz., 100% combed and ringspun cotton; 30 singles; Ash is 99% combed and ringspun cotton, 1% polyester; Athletic Heather is 90% combed and ringspun cotton, 10% polyester; All other Heather colors are 52% combed and ringspun cotton, 48% polyester; Marble colors are 3.5 oz., 91% poly, 9% combed and ringspun cotton, 40 singles ; Neon colors are 3.6 oz., 52% combed ringspun cotton, 48% polyester, 40 singles; Retail fit; fitted sleeves; sideseamed; Tear-away label