3.6 oz., 52% combed and ringspun cotton, 48% polyester; 40 singles; Triblends - 3.8 oz., 50% poly, 25% combed ringspun cotton, 25% rayon, 40 singles; Marble colors are 4 oz., 91% polyester, 9% combed ringspun cotton, 30 singles; Neon colors are 3.6 oz., 52% combed ringspun cotton, 48% polyester, 40 singles; Sideseamed; Contrast raglan sleeves and neck trim; Unisex sizing; retail fit; Disclaimer: neons are brighter than they appear online