These pajamas will feel luxurious on your skin! This fabric is high quality and very soft and comfortable. Made of 100% Polyester, classic Button up pajama features a button up lounger top with pocket and pants include an elastic waist band. Wash cold with like colors, dry on low heat only. Sizing Runs as follows: Small (2-4), Medium (6-8). Large (10-12), XL (14-16).