Callaway 2016 X-Series Jersey Contrast Collar Opti-Stretch Mens Golf Polo Shirt 3% spandex Brushed solid jersey polo with contrast collar Industrial stitching and ribbed collar 97% Polyester/3% Spandex Contrast Callaway Chevron logo on wearers left collar. Stretch and sun protection technology Callaway Opti-Stretch fabrics feature interwoven layers of Spandex to ensure maximum range of motion so the garment moves with the golf swing