Superfeet Insoles Size: D (25-26) I was using these in my size 25 office shoes. Used for 1 year. I haven't used them for exercise, so they are clean and in good condition. The sturdy heel cup supports the arch of the foot, enhancing the foot's natural function. Because the heel cup is deep, the corrective force is strong. They are also thick, so they can be used not only in everyday shoes but also in high-cut shoes and large-volume shoes like hiking boots. ↓ Helps improve the following problems ↓ Hallux valgus (bunions) Ingrown toenails Plantar fasciitis Achilles tendinitis Shin splints Knee pain Foot fatigue from standing work