1、This insole can prevent forefoot external rotation and heel valgus, improve flat feet and unstable walking problems. 2、The heel cushioning sheet has high density, fine and uniform structure, and excellent resistance to compression and deformation. 3、Meet the three‑point mechanical balances of the arch, balancing the inner and outer arches when walking. 4、The three-point mechanics promotes the foot structure to be in a stable and neutral state, preventing the feet from being damaged. 5、The U‑shaped heel can fix the neutral heel position, wrap around the heel, prevent the heel deviation and slip, and play a better corrective role. 6、Both sides are heightened to effectively protect the foot joints, guaranteed during exercise. Condition: 100% Brand New Item Type: Insole Material: EVA+Superfine Velvet+Polyurethane foam Size Length Width Suitable Size Range XS 15cm / 5.9in 6.8cm / 2.7in 21-24 S 17cm / 6.7in 7.2cm / 2.8in 25-27 M 19cm / 7.5in 7.6cm / 3in 28-30 L 21cm / 8.3in 8cm / 3.1in 31-33 XL 23cm / 9.1in 8.3cm / 3.3in 34-36 Feature: Tailored insole: Comparing to the original insoles tailored according to the size range you need. Tailoring Step: 1. Take out the original insole 2. Contrast with the new insole from the edge of the heel 3. Determine the cutting length edge line 4. Trim slowly along the edge of the original insole 5. Tailoring is complete, take out the original insole and put in the new insole 1 x Pair of Insoles