2PC SET: Silk Couture Womens Pajama / Loungewear Top & Pants Super comfy and stylish 2 piece sleepwear set made of a beautiful fabric: 90% silk and 10% micro-fiber. The micro-fiber element of the fabric provides structure to this silk garment and increases its lifespan. Great top features adjustable tying strings can be tied at back. Sleep pants has elastic at waist to snug up the fit and create a cozy feel against your skin.