Personalized Owl 100 Days 1st Grade Men's V-Neck T-Shirt. Funny 100th Day of School Men's V-Neck T-Shirt - White for grade school teachers and students with 3 cute owls on a yellow ruler says 100th DAY OF 1st Grade. Celebrate being 100 days smarter. 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