Personalized Methane Man Long Sleeve T-Shirt. Methane man in evaporating text is a funny design for that gassy special someone who doesn't mind being a human air freshener. Great gag gift at birthdays, bachelor parties and holidays. 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