The youngest member of your family is already a die-hard Boston Celtics fan, and you want to help them show it. Pick up Kids Marcus Smart Boston Celtics rompers and bodysuits from store.nba.com to help them declare their fandom from an early age. Score an adorable Boston Celtics bodysuit with fun team graphics and a snap closure to make changing a breeze. Your little fan can also honor your favorite athlete, thanks to name and number Boston Celtics rompers. Here you can also create a custom Boston Celtics romper with your kiddo’s name, so they’ll truly feel like a part of the team.