Actual size: Approximately 11 cm x 8.5 cm (Suitable size: Approximately 22-24.5 cm) Made with PP rope. Base and thong are 100% cotton. The thong uses cotton padding. ★ The front part of the thong can be adjusted. If it's too tight, adjust it to the perfect length for your foot. ★ The front part of the thong uses cotton fabric, so it won't stretch because it doesn't use knit fabric. ★ The arch of the foot is slightly reinforced to provide stimulation. Wearing Ashinaka (half-sole sandals) allows you to use your toes and strengthens the muscles of your feet. ☆ Gripping the thong opens your toes and prevents bunions. ☆ Stimulates the arch of the foot, improving blood circulation. ☆ Placing your heel on the ground shifts your center of gravity backward, allowing you to stand with a straight posture. ☆ Improves posture and can alleviate lower back pain. Various problems can be expected to be resolved, such as the above. If it gets dirty: You can wash it in a washing machine using a laundry net, but it may fade, so wash it separately at first. When shipping: It will be delivered in a compressed state, so please shape it before use. Pattern/Design...Print (logo, etc.) Material...Cotton