Personalized I'm A Big Bro Dinosaur Boys Brother Announcement Men's V-Neck T-Shirt. Adorable boys I'm A Big Bro dinosaur Men's V-Neck T-Shirt - White for your son when a new baby joins the family. 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