Personalized Sailing 100 Days 3rd Grade Women's Plus Size T-Shirt. Funny 100th Day of School Women's Plus Size T-Shirt - Vintage Red 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. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40 combed ringspun cotton/polyester)