Gelactiv Professional Insoles help reduce the excessive pressure that feet are subjected to. They are designed to absorb impacts (especially on hard surfaces) and help reduce the strain caused by long periods of standing. They cushion impacts on heels, ankles, and knees. These insoles can be used in professional, daily, and sport shoes. They can be individually cut to fit the actual shoe size. They have good grip on the bottom and do not slip after placement.