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