Gerber Sleep N’ Plays are a parents best friend! These soft footies are made with cotton, a comfortable fabric thats perfectly breathable to prevent irritation against babys delicate skin. We had this product independently certified with STANDARD 100 by OEKO-TEX so that you dont have to worry about harmful substances in your babys clothing. Theyre appropriate to use as newborn footie pajamas as theyre made to comply with all safe sleep standards. Each Sleep n Play features a zipper down the front of the outfit to allow for easy and fast diaper changes. This zipper makes the baby sleeper incredibly easy to put on as well as to take off. Atop the zipper is a safety tab with a snap to keep the zipper held in place. These baby sleepers are footed to add extra warmth which is wonderful for sleepy time as well as if there is a chill in the air. It also means no fooling around with baby socks! Gerber provides high-quality products that are easy and convenient for parents as well as cute and comfortable for baby.