Although unused, I have tried them on indoors. The size is 21cm, but it seems to be a larger fit, and it was a perfect fit for me, who usually wears 22.5-23cm. Please refrain from purchasing if you are nervous about the item being stored by a private individual. Shipping will be done with slight compression. ⚠️ Listed until the end of February; after that, I will give them away, so please consider purchasing by then. - Brand: JaVa. - Color: White - Style: Sports sandals Color: White系 The following is from the official website: 《JAVA Java Collaboration》 Flat Velcro Sports Sandals with Straps The popular JaVa shoes series has been further upgraded! JaVa shoes are sports sandals that pursue functionality with a focus on "easy to walk," "comfortable to wear," and "durability." Of course, because it's a simple product, we also pursue a high level of sensitivity as sandals to show off. We have achieved a design that blends into any scene. "Soft insole" The arch supports body balance and plays an important role when walking. The three-dimensionally molded insole gently fits the arch, improving comfort and reducing fatigue. "Outsole with excellent grip" Uses a lightweight and non-slip rubber material. It moves with your feet, so it properly supports walking. It is also useful in waterside scenes. "3-point strapping" Three straps firmly hold the foot. Velcro tape with a long adjustment range. The tip has a strap end, and it's Velcro for quick on and off. 【Notes on choosing the size】 In addition to the actual length of the foot, shoes have a slight margin, but the outsole size (straight-line distance from heel to toe) of this product is the size + 3cm, which is slightly larger than usual.