A set of slippers that guide you to the correct center of gravity and beautiful posture just by wearing them, along with a mini-book on how to effectively use the slippers. The slippers are designed with various features to help maintain correct posture. The insole has protrusions to maintain body balance, and the 5.5cm heel provides a leg-beautifying effect! Wearing them every day at home or in the office will undoubtedly lead to beautiful posture. (Free size: 22-25cm) Casual slip-ons, made of synthetic leather, black. - Color: Navy - Style: Slippers - Size: Free size (22-25cm) Thank you for viewing. These are the slippers from the "Hakudake Slipper Diet" mook book. I used them indoors for about 3 months, and my shoe size is 24cm. Thank you. Color: Navy