Callaway Men's Big and Tall Golf Performance Stripe Detailed Short Sleeve Polo Shirt 100% Polyester Imported Big and Tall Short Sleeve, All-Over Mesh Ventilation Opti-Genic, keeps the garment fresh over time, reduces odor and helps maintain durability Opti-Vent, fabrics allow for the garment to have maximum breathability Opti-Dri, Transfers moisture away from the body to help in evaporation