polyester+acrylic+silk satin.Button closure.Material: 100% polyester, high quality satin fabric, not easy to wrinkle, shrink or fade in the wash if meet the washing requirement, soft, lightweight yet durable, skin-friendly and breathable, for year-round temperature regulation.Features of Nightgown: boyfriend Style sleepshirt, 3/4 sleeve,v neck, button down nightdress, solid color, with good cut hem, loose fit & great length to make you relaxed and attractive.Occassion: Loose-fitting nightgown goes well with most body shape, perfect for casual/sleep wear/lounge wear/maternity wear in leisure, walk in the park & relaxing life.Best Gift: this satin nightgown is essential for sleeping and lounging for ladies, a gift that won't go wrong for your girlfriend, wife, mother, sister, friends and yourself.Note: Hand-Wash gently or Machine-Wash with laundry bag.