Materials: Silk satin material, 96% polyester, 4% other fibers;Designs: Exquisite piping & Chest Pocket & Turn down collar & Elastic Waist and button closureWashing Tips: Machine Washable, hand washed suggestion. Great for sleeping, casual wear or lounging around the house or yard all day.SILKY SATIN SLEEPWEARSmoother, better and soft to the touch and easy on the skin. Anjue silk satin pj set is made from comfy silk satin, soft, breathable and skin-friendly materials, making relaxing as comfort as possible. Perfect for sleepwear, nightwear or loungewear.ELASTIC WAISTElastic waist that fits for any body size and makes relaxing as comfort as possible. Excellent silk pajamas set for lounging, sleeping, nursing, travel, spa, bridal shower, etc.