Thank you for viewing my listing among many others. (^-^) [Product Description] ■Outer Material: Gel This special insole can properly create the arch of your foot, fitting perfectly to your instep. Simply insert it as a sock liner for a comfortable feel. The highly cushioning gel effectively absorbs the impact on your instep. ■Outer edge is high, inner edge is low The height difference structure correctly guides your balance while walking and corrects poor walking habits that cause O-leg walking. By using these insoles, your knees will naturally be guided inward, and by maintaining your center of gravity inward, the muscles on the inside of your legs will be trained, leading to a diet effect. ■Mainly suitable for O-legs, flat feet, plantar fasciitis, pronated feet, knee pain, etc. Can be widely used for standing work, construction workers, commuting/schooling for those who work outdoors, walking, and sports! The gel insole has a shape that firmly wraps around the heel and uses shock-absorbing material, protecting the sole of your foot from impact and friction. Reduces fatigue through acupoint massage and maintains a snug fit. Even if you wear shoes all day or engage in intense sports, you can feel comfortable without unnecessary fatigue. ■Simply insert them into your favorite shoes or heels and walk to stimulate the adductor muscles of your thighs and calves. By supporting your weight and stabilizing your knees, you can reduce knee pain, making them ideal for people who walk a lot, have standing jobs, or experience pain in their feet or knees! *If they become dirty, please wash them with water, air dry, and then use them again. M size is for 23.5-24.5cm. *Please Note* *As these are imported goods, there may be rough stitching or construction, odors, or crushed outer boxes. We kindly ask that those seeking perfect, Japanese-made products refrain from purchasing. *The color may vary depending on your PC display environment. *We cannot accept returns or cancellations due to customer reasons such as size or image discrepancies. *The outer box is not included. *If you receive a defective or faulty product, please contact us before leaving a review. *The item will be shipped in simple packaging. Thank you for your understanding. (^-^)