I purchased these new and wore them a few times. The soles have been customized with "Shigure-zoko" soles to prevent slipping on rainy days or after rain. I believe the customization cost over 20,000 yen. Below is an excerpt from the product description at the time of purchase: Three-layer core enamel black, Kiku no Kono (Chrysanthemum's Preference) design, genuine silk embroidered thong Designed by Zori-coordinate Toshiyuki Kabe The glossy material gives a sense of luxury. Suitable for Komon (casual kimono) and Homongi (formal kimono) etc. Of course, genuine cork core and genuine leather chrome soles are used. Of course, these are made in Japan with the heartfelt care of craftsmen, ensuring safety and peace of mind. Genuine cork and genuine leather soles are used. ⭐️About Kiku no Kono: This is a thong made by Kiku no Kono Co., Ltd., a company that handles products for the Imperial Household, selects materials carefully, and aims for a new style, with a single craftsman dedicated to handmade craftsmanship. Kiku no Kono was founded in 1938 and has continued to provide high-quality products as a thong manufacturer. The first generation, Yonetaro Kurimoto, was the first in Japan to produce a set of Zori (sandals) and bags as a high-end Zori bag maker. Even within tradition, the company always aims for new manufacturing, providing Zori that are easy to wear and authentic. Without a doubt, these are the finest items that will create an elegant and refined look. M size, suitable for those who wear 23.0-23.5 cm shoes. For those who understand the nature of reused items.