High arches cause a multitude of foot problems; from plantar fasciitis - caused by over pronation when the arch is flexible - to corns, calluses, even lower back pain if your foot is rigid. IsoArch High Arch Foot Supports feature a soft padded arch cookie that ensures full arch contact for the high arched foot. Their contoured shape supports feet both lengthwise and across the arch, keeping feet properly aligned, cradling and stabilizing heels. An Enduron foam heel insert aids in foot shock protection. 3/4 length. Specify men's/women's shoe size. Cannot mix sizes for quantity discount.