Bella + Canvas Men's Thermal Long-Sleeve T-Shirt 100% Cotton Imported 4.2 oz., 100% combed and ringspun cotton 30 singles Unisex sizing; Athletic Heather is 90% combed and ringspun cotton 10% polyester BlueTribld,CharcoalTribld 50%poly,25%comb/ringspn cot,25%rayon,40 singles,3.4oz. Grey Triblend 50%poly, 25%combed/ringspun cotton, 25%rayon, 40singles, 3.4oz.