Personalized Owl 100 Days 3rd Grade Women's Plus Size T-Shirt. Funny 100th Day of School Women's Plus Size T-Shirt - Heather and Hot Pink for grade school teachers and students with 3 cute owls on a yellow ruler says 100th DAY OF 3RD Grade. Celebrate being 100 days smarter. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40 combed ringspun cotton/polyester)