Super Dad Superman Official Great Dads Get Promoted To Grandpas Design Super Dad Superman Official is on a high quality adult unisex style tee. Machine Washable, Material: 100% preshrunk cotton is constructed of soft, natural cotton with quality features for years of casual wear. Garment: seamless body with set-in sleeves double-needle stitched sleeves, bottom hem and front neck. Shoulder-to-shoulder taping.