This is a one-piece pajama from Wacoal's "Suimin Kagaku" (Sleep Science) series. I have a different color and have kept this one carefully. The calculated shape and thick, luxurious silk fabric make it very comfortable to wear, and I feel like I sleep soundly and deeply when I wear this. Please check the images for the size. I usually wear a size L, but I wear this size. The silk is warm in winter and cool in summer, and the one-piece type without a tight waist is highly recommended! Material: 100% silk Manufacturer's suggested retail price: 37,400 yen Size: M *It's moderately loose, so I think it can be worn by those who wear size L. Color: Navy Brand new, unused, with tags [Sleep Science] Women's pajamas <One-piece> "Turning sleep time into dream time" If sleep becomes richer, daily life will be more full of vitality. With the concept of "turning sleep time into dream time," we offer a wide range of sleep items, including pajamas designed with "comfort of movement," "comfort of temperature," and "comfort on the skin," leading to a joyful tomorrow. Silk contains components (protein amino acids) close to human skin, and it is a material that has less friction with the skin and is easy to get used to. It has moisture absorption and release properties and can be worn throughout the season. 〇Design points The pattern design shifts the seam position of the sleeves and body, naturally following the lines of the shoulders and arms for a comfortable fit. The seams on the sides are less likely to overlap, providing a good feel against the skin. By making the bottom buttonhole horizontal, the hem buttons are less likely to come undone even when moving. ※Please note※ Due to the nature of the material (silk), creases may occur. They will be resolved by washing, so please rest assured. When washing, please check the washing instructions on the product. Women's pajamas, nightwear, loungewear, sleepwear, shirt pajamas, one-piece pajamas, long length, silk 100%, women's, all season, year-round, comfortable, high quality, elegant, sleep science, YNX584 replacement, Wacoal YNX544