Joe Boxer Baby Girl or Boy One-Piece Romper / Jumpsuit 100% polyster 100% Authentic Joe Boxer merchandise, satisfaction guaranteed EXCELLENT FABRIC: 100% polyester, high quality machine washable material Rib-knit trim creates a cozy feel against baby's skin Full zip closure makes dressing baby a breeze; Lovely patterns accents the style It is suitable for a baby to wear it in Winter. It is very soft and warm.