Personalized Rock On Men's V-Neck T-Shirt. Rock On. A rock sits atop the word on is a humorous twist to a common phrase. Make your favorite rockers and music lovers smile with a unique gift at birthdays, holidays, graduations and back to school. 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