Perfect for custom-fitting Combat Touring boots, especially if your foot falls between sizes. Makes boots feel like they were custom made and adjusts for varying sock thicknesses. They’ll also provide the same fitting effect with older, stretched and worn boots. These insoles feature a patented Etc® fabric top cover that is cool and long wearing. A firm polyethylene mid foam over a molded and shaped arch platform provide scientifically researched foot support that translates to less fatigue, reduced shock, and all-day walking comfort. High profile (thicker) for boots with more volume. Trim them for a custom fit. 5.5–7, 7.5–9, 9.5–11, 11.5–13, 13.5–15.