Zippy is made from soft bamboo fabric (95% viscose from bamboo; 5% spandex) which is naturally hypoallergenic and helps regulates body temperature, making it perfect for year-round wear. Fold-over hand cuffs protect your little ones from scratching themselves, while fold-over foot cuffs allow you to turn the romper into a footie and back again. Double zipper makes middle-of-the-night changes a breeze! Made without harsh chemicals and designed to fit snugly in accordance with all CPSC regulations.