Thank you for viewing. Size M (26-27cm) [Addresses Foot Problems/Strain] This innovative product uses high-quality, soft PU material throughout, and its excellent flexibility and durability significantly reduce foot strain from prolonged exercise. Furthermore, the superior PU material has high moisture absorption and breathability, maintaining foot health, preventing slipping and bacterial growth, and providing a comfortable, dry environment. This alleviates foot pain, allowing you to enjoy comfortable walking to your heart's content. [High-Quality American-Made PORON Material Enhances Shock Absorption] High-quality PORON material made in the USA is used, with "Poron Vive" material in the forefoot and "Poron Comfort" material in the heel. Its outstanding shock absorption and rebound effectively reduce the strain on the feet during walking and running. It reduces fatigue and discomfort, providing long-lasting comfortable support. [Ergonomic 3D Arch Support Design] The 3D foot arch support insole adopts a "golden triangle" design based on ergonomic principles. By providing accurate support to the three points of the forefoot, arch, and heel, it promotes the normal growth and development of the foot arch and effectively relieves fatigue. The arch support TPU material combines softness, elasticity, and strength, supporting various foot shapes from flat feet to high arches. [Ultra-Stable U-Shaped Heel Cup] The deep U-shaped heel cup design ensures a secure fit during walking and running. The support for the feet is effectively enhanced, preventing sprains and slips during exercise, and providing high safety. Furthermore, the arch support promotes the correct posture of the heel, reducing the risk of ankle injuries and providing comfort and stability during daily exercise. [Size Adjustment & Breathability and Odor-Resistant Processing] The insole is size-adjustable, and a simple cut allows for a perfect fit to your shoes. In addition, excellent breathability and odor-resistant processing maintain comfort even after prolonged use, making it suitable for all seasons. S-1