Personalized Tool Box Best Grandpa Men's V-Neck T-Shirt. Father's Day Men's V-Neck T-Shirt - Black for grandpas and papas with a box of tools says BEST GRANDPA IN THE WORLD. Perfect for handy grandpas. 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