This is an off-white 【2.718】 strap pump from GALLARDAGALANTE (ガリャルダガランテ). https://www.palcloset.jp/display/item/GGZ1042213A0003/ ↑ I purchased this product. Reference price: 10,560 yen I bought these for a wedding, but after trying them on, it seems I got the wrong size and couldn't wear them, so I'm putting them up for sale. Feel free to comment if you'd like more photos. ※ The following is a product description from the official website: Back strap pumps that lead to elegant feet. ● Square toe pumps that create a sophisticated look for your feet. ● Delicate ankle straps give a feminine impression. ● Slingback design adds a touch of casualness. ● Straight heel that is stable and easy to walk in. ● A reliable item for various scenes, from occasions to everyday wear. 【2.718】 - Ni-ten-na-na-ichi-hachi - Derived from the number representing Napier's constant. Sophisticated beauty born by those who hold it. With infinite possibilities that expand depending on the scene. A lineup of items for adult women. Product number: GGZ1042213A0003 Material: Cowhide Country of origin: Japan Size: 37 (equivalent to 23.5-24cm)