The Gymboree Boys Train Print One Piece Pajamas in size 4 are perfect for keeping your little one warm and snug during the winter season. Made from 100% cotton with a ribbed fabric type, these pajamas feature a novelty train print that is both fun and festive. The long sleeves, zip closure, and crew neck neckline make them easy to put on and take off, while the lightweight and snug-fitting design ensures comfort throughout the night. Ideal for camping or a cozy night's sleep, these pajamas are machine washable for easy care.