Pajama Heaven Women's Satin Short Sleeve Pajamas Satin This fabric is high quality and very soft and comfortable. Made of 100% Polyester Perfect for any time of year Classic Button up pajama features a button up short sleeve lounger top with pocket and pants include an elastic waist band Sizing Runs as follows: Small (2-4), Medium (6-8). Large (10-12), XL (14-16).