The 3Feet® Protect insoles are designed for high arches and are made for runners seeking maximum comfort and protection with every step. The gel at the heel provides exceptional cushioning, while the area under the forefoot promotes propulsion. These insoles are suitable for all foot types and offer support and stability for a secure run. Additional information: Midfoot reinforcement (EVA) for stable and controlled steps, non-slip Merrymesh cover, bi-density structure for vertical comfort, forefoot structure (EVA rubber) to enhance propulsion, gel pad at the heel for shock distribution, and perforations for breathability. Size chart: Size XS shoe size 35-36, S 37-38, M 39-41, L 42-43, XL 44-45, XXL 46-48.