Only tried on, new with tags. Size 38 I usually wear size M, and it felt a little small to me as I don't like things that are too tight. Please refer to the size details below. The zipper on the back opens quite a bit, making it easy to change. [Brand] Demi-Luxe BEAMS Demi-Luxe BEAMS [Item] Set up One-piece dress & Jacket Retail price ¥24,000 + tax [Material] *Jacket* ・Outer: 54% cotton, 14% nylon, 14% wool, 11% acrylic, 7% rayon ・Waist: 100% polyester ・Lining: 100% polyester *One-piece dress* ・Outer: 54% cotton, 14% nylon, 14% wool, 11% acrylic, 7% rayon ・Lining: 100% polyester *Jacket* [Size (cm)] 38 Length: approx. 45.3 Sleeve length: approx. 55.8 (Sleeve + shoulder length: approx.) Width: approx. 44.3 Shoulder width: approx. 37 *One-piece dress* [Size (cm)] 38 Total length: approx. 89 Sleeve length: approx. 48.3 (Sleeve + shoulder length: approx.) Width: approx. 44 Shoulder width: approx. 38.3 Waist: approx. 36.3 *Measured flat Please note that there may be some errors due to amateur measurements. Graduation ceremony, entrance ceremony, entrance exams, Shichi-Go-San (Children's Day)