Personalized Robot 6th Birthday Men's V-Neck T-Shirt. Little robot 6th birthday I'M SIX Men's V-Neck T-Shirt - White with cute robot, stars and red planet with the number 6. 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