Personalized 50 Is Just A Number Men's V-Neck T-Shirt. Happy 50th birthday! 50 is just a number. A BIG number! Fifty years is a long time, you know. 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