Personalized Shamrock Music Notes Light Greens Men's V-Neck T-Shirt. A shamrock comprised of green and yellow music notes is a fun design for family and friends during the March holiday of St. Patrick's Day and Celtic festivals. 4.7 oz., 100% pre-shrunk cotton Narrow, set-in 1x1 mitered V-neck collar Shoulder-to-shoulder taping Double-needle stitched sleeves and bottom hem