Personalized Whatif Long Sleeve T-Shirt. He's anxious, he's pessimistic, he's doubtful, but he's oh-so cute. Whatif Long Sleeve T-Shirt - Red, from "Jonathan James and the Whatif Monster" by Michelle Nelson-Schmidt. 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