100% Nylon. Two-Way Full Zip. Mock Collar. Sleeveless. Two Front Pockets. Callaway Chevron TPU logo on center back collar. Opti-Therm: insulated fabric designed to withstand the cold and provide a layer of thermal comfort. Opti-Stretch: interwoven layers of spandex ensure maximum range of motion so the garment moves with the golf swing. Machine Washable. Imported