This item was purchased from the Vivian Collection. The official website is constantly selling out!!! It has good stretch, but the opening felt a little tight on me, so I'm selling it. The retail price was around 4500 yen, I believe! I use a different product, but Vivian products are great because they don't make your feet tired and are very easy to walk in! I highly recommend them!! I've used it a few times, so there are some scratches and stains! Please note that the box is not included. M size (23.0-23.5cm) ・Length: 25.5cm ・Width: 22.2cm ・Foot width: 7.9cm ・Heel height: 7.3cm ・Shaft height: 14.0cm ・Opening circumference: 21.0cm ・Ankle circumference: 21.0cm Based on the website. Price is not negotiable.