65% Polyester / 30% Recycled Polyester / 5% Elastane. Crew Neck. Striped Panels For Eye-Catching Style. Callaway Logo At Back Neck. Short Mesh Sleeves. Model Is 5'8" And Wears Size Small. 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.