Our 2 piece pajama sets 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. MORE ABOUT FUNCTION AND FABRIC: * Short sleeve top & matching pants * No snaps, buttons, or interior tags * 95% viscose from bamboo; 5% spandex * Machine wash cold