Callaway Men's Opti Dri Comfort Performance Auto Stripe Polo Shirt Auto stripe, ribbed collar, 3-button placket Opti-Shield Technology- Creates a layer of protection from the sun's harmful rays Opti-Dri Technology- Transfers moisture away from the body to aid in evaporation Opti-Vent technology- Allows for the garment to have maximum breathability 95% Polyester/5% Spandex; embossed logo on sleeve