Do you go organic with your kids? Are you raising an EcoGeek in training? Then this is the shirt for you! This design is printed on an American Apparel short sleeve organic T-Shirt. Did we say organic? Why yes, in fact, this shirt is made from 100% organic fine Jersey cotton, and has a durable rib neckband. Unisex sizes (Size 2 - 31-34lbs, 32-36" tall, Size 4 - 35-41lbs, 36-40" tall, Size 6 - 42-45lbs, 40-43" tall)