Personalized Blast Off For 3rd Grade Women's Plus Size T-Shirt. Get ready for grade school Women's Plus Size T-Shirt - Vintage Red with a rocket ship, planet and stars says BLASTING OFF FOR 3RD GRADE. Back to school gifts for 3rd graders and 3rd grade teachers. 100% combed ringspun cotton premium jersey (CVC Colors are 60/40 combed ringspun cotton/polyester)