BACKYARD FAMILY Core Muscle Exercise Insole Twin Ball [No Exchange or Return]

■【Brand Name】
BACKYARD FAMILY
■【Product Name】
Core Muscle Exercise Insole Twin Ball
■【Product Description】
・Developed by Mr. Kasugai, the head of the training studio TRUST! The high-performance insole "Twin Ball" equipped with 7 functions that promote the activation of "core muscles" is now available♪・The core muscles, which are difficult to activate consciously, can be activated simply by placing them in your shoes. 1. Shock Protection Zone (back). The honeycomb-shaped heel pad reduces impact on the body. Enables more exercises. 2. Core Ball Zone (back). The two core balls increase muscle activity by destabilizing balance upon landing! 3. Core Ball Function Enhancement Zone (back). Prevents ankle wobble and enhances the effect of the core balls. 4. Heel Zone (front). Designed to fit the arch of the heel, it adheres perfectly to the sole of the foot! 5. Inner Arch Zone (front). Forms a vertical arch in the arch of the foot, fitting securely to the sole! (*Individual experiences may vary.) 6. Ball of the Thumb Zone (front). The indentation in the ball of the thumb helps maintain body balance. 7. Ultra-thin Material. Approximately 3mm thick, suitable for any shoe!・As a result of a 5-minute calorie consumption test, using this product increased calorie consumption by approximately 70%! (*Conducted at Shizuoka Institute of Technology, manufacturer research. The test was conducted with three men and women in their 20s and 30s, comparing walking for 5 minutes with and without this product.)・Because you can easily exercise just by "wearing it," it's perfect for those who are busy and concerned about their health...
■【Material】
polyester
■【Country of Origin】
China
■【Size】
・S Size (approximately 22.0-22.5cm)・M Size (approximately 23.0-23.5cm)・L Size (approximately 24.0-24.5cm)・LL Size (approximately 25.0-25.5cm) *There may be slight discrepancies from the actual product. Please understand in advance.
■【Weight】
Approximately 82g (*Weight of M Size (approximately 23.0-23.5cm).)
■【How to Use】
*Please choose a size that fits your shoes. *Use with the mesh fabric side facing up. *If dirt occurs, wipe it off with a damp cloth that has been wrung out tightly.
■【Precautions】
*The insole is made in a standard shape, but it may not be usable depending on the design of the shoes you are using and the shape of the insole. *If you experience pain, itching, or rashes during or after use, please stop using it. *If you have any disabilities or are undergoing treatment for injuries or illnesses in your feet, back, or body, please consult a doctor before use. *Do not use for purposes other than its intended use. *There may be individual differences in the feeling of use. *There may be color transfer to socks or stockings due to sweat, etc. Additionally, as the fabric is dyed, it may fade over time. Please understand in advance. *Do not use in shoes that are too tight. *Shoes with a particularly loose fit are recommended for the instep. *Do not use for long periods suddenly; start with 2-3 hours of use and gradually increase the duration to get accustomed. *Keep out of reach of children. *Store in a cool, dry place away from direct sunlight. *Due to the nature of cameras and monitors, there may be color differences between the images and the actual product, so please understand.

※※Notice of Price Change: The price was changed on May 26, 2026.※※