Massage Insoles Are Breathable Sweat Absorbing And Keep Flat They Support 16 Magnets With A Full Arch Features: 1: New breathable material, soft and comfortable, all-round sweat absorption. 2: 16 magnet designs, corresponding to the positions of acupoints on the soles of the feet (including insomnia, reproductive points, heart, trachea, intestines, and lungs) 3: Arch support design improves the incorrect on the sole of the foot and relieves pressure and pain on the flat foot. 4: U-shaped heel cup design, fits the foot, protects the ankle joint, stabilizes the heel, and enhances walking stability. 5: The protruding design at the bottom of the heel cushions the pressure on the heel during running, providing higher comfort and better shock absorption. 6: Two sizes are available for selection, with a cutting line design that is easy to use and suitable for multiple types of shoes. Product Description: Product Name: Magnet Massage Insole (Breathable Arch Style) Material: Knitted fabric+new breathable cotton Specifications: S 35-41 (25.5CM), L 42-48 (29CM), can be cut. Thickness: Forefoot 4MM, middle arch height 12MM, heel U-shaped cup height 14mM. Weight: Small size 85g, large size 90g. Number of magnets: One pair of insoles contains 16 magnets Includes: 2 pcs/1 pair