The Hyperion ¼-zip pullover shirt from TRI MOUNTAIN PERFORMANCE features Tri-Mountain UltraCool® moisture wicking technology. MKL-00035B has reflective trim along zipper, raglan sleeves, square bottom and flatlock stitching. Big men’s sizes 3XL-4XL. Available in Black 33%, Autumn Orange 18%, Yellow Gold 16%, Formula Red 13%, Chlorophyll(Mint) 10%, and Blue Atoll 10%. Made of 88% Polyester/ 12% Spandex. Machine wash cold with like colors on gentle cycle. Imported.