ENERTOR performance insoles have added arch support and a deeper heel cup for increased stability. They are most suited to those people who want the extra support. They are ideal for all kinds of sports, hiking or heavy-duty work. They reduce the amount of pronation and give maximum control and stability to the foot, with a supported arch, built-up heel and moulded stability shank underneath, aligning the foot with the lower limb, therefore reducing Tibia and Femur rotation and the stress this can put on your joints.