I tried them on my shoes once, but I haven't used them since and have kept them in storage. Size: 22.0-23.0cm Color: Beige Insoles for pumps The following is a product description from the purchase site: [Over 2 million pairs sold!] Style beauties have beautiful feet♪ New material "Grim Air" is used♪ "Easy to walk, comfortable feet" is very popular♪ Just by wearing them, they naturally adjust the skeletal balance of the feet, improving posture, beautiful legs, and beautiful posture♪ BMZ, which has the overwhelming support of top athletes such as Winter Olympic medalists, professional baseball players, and J-League players, has developed insoles for women's pumps, which have been in high demand. [What is the BMZ cuboid balance theory?] BMZ cuboid balance insoles are based on the idea of adjusting the "skeletal balance of the feet" with the cuboid bone as the center, and have obtained a patent [Patent No. 4733957]. By using BMZ cuboid balance insoles, it is possible to achieve both "stability" and "mobility." In addition, because they bring the alignment of the feet and body closer to a normal state without strain, you will be able to move your feet more naturally, more comfortably, and more powerfully. By using BMZ cuboid balance insoles, the "domes of the feet" will be brought closer to a normal state, preventing the chain of "misalignment" that starts from the feet.