Abstract: An orthotic insert formed of a resilient molded flexible plastic support member, a thin layer of vinyl applied to the upper surface, and a spongy resilient heel post mounted on the lower surface in the heel region. The insert extends from beneath the heel to a location proximal of the heel of the metatarsal joints of a user's foot. The insert is flexible enough to accommodate variations in individual feet without the need for custom fitting, yet resists flex sufficiently to beneficially limit excessive foot pronation and thereby minimize injuries associated therewith.