Made with soft cotton interlock, our Polo bodysuit is a pair-with-anything essential.100% cotton. Machine washable.By choosing our cotton products, you're supporting our investment in the Better Cotton™ mission to help cotton communities survive and thrive, while protecting and restoring the environment.This product is sourced via a system of mass balance and therefore may not contain Better Cotton™. Visit bettercotton.org/learnmore for more information about mass balance.Size 9 months has a 15.25" front body length and an 18.25" back body length.