Our double zipper sleepers are made of the softest material - viscose from bamboo! So gentle on skin and perfect for any season, which is great because these sleepers last much longer than your average pajamas due to bamboos amazing stretch abilities. Our Blue Crab Pattern was created to be a gender neutral classic design that's sure to become a bedtime staple for your little! MORE ABOUT FUNCTION AND FABRIC: * Fold-over mittens in all sizes to protect your little ones from scratching themselves  * Fold-over foot cuffs on all sizes to effortlessly convert from footless romper to footed sleeper * Double zipper that makes for quick and easy diaper changes * No snaps, buttons, or interior tags  * 95% viscose from bamboo; 5% spandex  * Machine wash cold