Personalized Lemon Poppyseed Muffin Long Sleeve T-Shirt. Do you just love a soft, moist lemon poppyseed muffin? This one is just right and comes on a fun Long Sleeve T-Shirt - Charcoal gift for muffin lovers. 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