Airex Balance Pad SolidThe Solid Airex Balance Pad features a higher density that massively increases the degree of hardness. It allows much softer stimuli during your session as it is not as unstable or as wobbly as all of the other Airex Balance Pads. It is an optimum tool for senior people or therapists who want to use it in the early course of therapy. The extensive waffle like embossing on both sides allows for a slip resistant and safe therapy and training experience.