90% Recycled Polyester / 10% Elastane. Collar. 3 Button Placket. Short Sleeve. Callaway Logo Right Sleeve. Machine Washable For Easy Care. Stretch To Give Full Range Of Motion. Model Is 6'1" And Wears Size Medium. Machine Wash. Opti-Dri™. Transfers moisture away from your body to keep you cool and dry.. Swing Tech™. Made to maximize your range of motion on every swing, Swing Tech provides noticeably less restriction through re-engineered construction and materials.