Sara's Prints Big Girls' Puffed Sleeve Nightgown, North Pole Santa Blue, 7 55% Cotton/45% Acrylic Imported Machine Wash Our puff sleeve gown is made of a super soft blend of 60 percent cotton and 40 percent mod acrylic that is inherently flame resistant without the use of topical chemical treatments This gown features pretty stretch satin elastic at the neckline and sleeves, a satin bow, and decorative stitching around the bottom ruffle to make the print really pop