Threadrock Little Boys' Future Scientist Infant/Toddler T-Shirt Threadrock exclusive Unisex tee, appropriate for boys or girls Infant sizes run small; consider ordering a size up Available sizes: 6M, 12M, 18M, 24M, 2T, 3T, 4T 100% preshrunk cotton; ribbed crew neck; taped shoulder-to-shoulder; double-needle hemmed bottom and sleeves