Personalized 30th Birthday Funny Party Long Sleeve T-Shirt. Colorful thirtieth birthday celebration idea saying rockin my 30th birthday message. 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