Personalized 2021 Best Shot Long Sleeve T-Shirt. Class of 2021, Taking Our Best Shot! A gloved hand with a syringe fills the zero. 2021 seniors have a lot to deal with, but they will give it their best shot. Vaccinated. Pre-shrunk 100% cotton 6.1 ounce long sleeve t-shirt. Double-needle stitched neckline and sleeves. Quarter turned. Shoulder-to-shoulder taping. Adult: S, M, L, XL, 2XL, 3XL