These jammies are so fun, he will never want to take them off! This fleece sleeper is designed to have him looking like Scooby-Doo, including the hood with Scooby's face. These cozy, flame resistant onesie pajamas have knit cuffs at the wrist and ankle, and a concealed zipper. Makes a great costume, too! Sizing is as follows: XS=4/5, S=6/7, M=8, L=10/12.