Personalized Sailing 100 Days 3rd Grade Women's V-Neck T-Shirt. Funny 100th Day of School Women's V-Neck T-Shirt - Black for 3rd grade, primary school teachers with sailboat and stars. My Kids Sailed Through 100 Days of 3rd Grade. Celebrate your students being 100 days smarter. 5.0 oz., 100% pre-shrunk cotton Athletic Heather is 90/10 cotton/polyester 1x1 rib collar with mitered v-neck Shoulder-to-shoulder taping Ladies' fit