Bamboo one-piece footie with reversible zipper opening. Signature Posh Peanut Footie grips, elastic backing on footies for a snug fit. Size:6-9 months Double backed lined reversible zipper Footed style with grips True to size, snug fit / Not treated with flame retardants Machine washable / Tumble dry low 95% Viscose from Bamboo, 5% Spandex