Threadrock Little Boys' Only Child to Big Brother Infant/Toddler T-Shirt Design as shown 100% preshrunk cotton; ribbed crew neck; taped shoulder-to-shoulder; double-needle hemmed bottom and sleeves *Sizing Note* Infant sizes run slightly small. Consider ordering at least a size up. Refer to our "infant & toddler sizing" chart for measurements. Available sizes: 6M, 12M, 18M, 24M, 2T, 3T, 4T