4.2 oz., 100% combed and ringspun cotton 30 singles Athletic Heather is 90/10 Dark Grey Heather and Deep Heather - 52% combed and ringspun cotton, 48% poly Black Mineral Wash is 52% combed ringspun cotton, 48% poly, 30 singles, 4 oz. Triblends - 50% poly/25% combed ringspun cotton/25% rayon, 40 singles, 3.4 oz. Relaxed fit sideseamed