4x2 RIB is 100% viscose quality fabric that has 4 way stretch to accommodate many body types. It has silky soft texture and feels really good on your body. Lustrous and lightweight enough to drape perfectly onto your skin. It's suitable for daywear, travel, loungewear or sleepwear. It will not harm your skin so you can wear it all day long. Easy to care for. Machine wash cold and gentle cycle dry.