This elegant black formal wear features sheer flared sleeves and a waist ribbon. Size: 11 Color: Black Style: One-piece & Jacket Sleeve Style: Flared sleeves Design Features: With waist ribbon Number of times worn: 5 Dry cleaned Thank you for viewing. I am 170cm tall and weigh 51kg, and I usually wear a size M or L at Uniqlo. This item is size 11, but it is made small, and can be worn by those who usually wear sizes 9-11. The length is such that it covers the knees for someone who is 170cm tall. I will fold it up small for shipping. Thank you for your consideration. Please feel free to ask if you have any questions.