The Acorn Romper has a harem style fit and is snap free. This one is for the mamas that like the easy on and off without the hassle of fastening snaps on a wiggly baby. Just put them in the romper feet first like you are putting them in pants, then pull it all the way up, and get those arms in. Easy as that! The neckband has added elastic to assure it will not get stretched out. These are made from a soft medium weight hemp/organic cotton/lycra blend fabric that has been hand dyed in the colorway Marigold.