100% Polyester. Easy Care. Ribbed Collar. Five Button Placket. Short Sleeve. Opti Dri™ Wicks Away Moisture To Keep You Dry. Stretch To Give Full Range Of Motion. Swing Tech™ Engineered Seams. Callaway Tour Logo At Right Sleeve. Model Is 6'1" And Wears Size Medium. Machine Wash. Swing Tech™. Made to maximize your range of motion on every swing, Swing Tech provides noticeably less restriction through re-engineered construction and materials.. Opti-Dri™. Transfers moisture away from your body to keep you cool and dry.