Come to Nerd Side We Have Pi Funny Pi Day Cool Geek Novelty Humor-Mens T-Shirt Made in USA and Imported For accurate sizing information, please refer to the size chart featured as a secondary image on the listing. Do NOT refer to the Amazon size chart LINK next to the size selector. This garment fits true to size. Adult short sleeve shirt, lightweight material and relaxed fit. Instant Message is an online specialty retailer for everything from fashionable to funny to inspiring screen-printed apparel. Garments offered range from long sleeve and relaxed fit tees, to slouchy sweatshirts and graphic print pullovers. We offer our products in varying styles and sizes. Our products feature fun and trendy graphics that are perfect for any occasion and also make for great gifts.