Personalized 2021 Kiss My Class Goodbye Long Sleeve T-Shirt. Kiss My Class Goodbye! Say goodbye to the class of 2021 with a kiss. You know where. Funny gift for your graduate. 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