Callaway Men's Classic Tech Shorts 95% Polyester, 5% Spandex Imported Opti-Dri: transfers moisture away from the body to aid in evaporation Opti-Shield; creates a layer of protection from the sun's harmful ways -UPF 50 Opti-Stretch: interwoven layers of spandex to ensure maximum range of motion so the garment moves with the golf swing Expandable Waistband Callaway Chevron Logo above back right pocket