The invention relates to an insole for use in footwear, and is comprised of a plurality of sections that are removably or securably attachable to a bottom layer. The sections can be made of different materials to provide different types of support, e.g. rigid or shock absorbing. The sections may also have different surface characteristics, which for example grip a portion of the foot or are slick to enable the toes to move. The insole can be used to at least partially abate and/or prevent foot and related ailments commonly suffered by diabetics and others with pathologic or painful foot conditions. A kit for making an insole is also contemplated wherein a variety of insole sections are provided that have different cushioning or support features and/or different surface characteristics. The user can choose the preferred insole sections and assemble the sections onto the bottom layer, thereby constructing a customized insole.