Gelactiv Professional Insole helps to reduce the excessive pressure to which the feet are subjected. They are designed to absorb impacts especially on hard surfaces and to help reduce standing up for long periods of time. allows you to cushion impacts on your heels, ankles and knees. These insoles can be used in professional, daily and sports shoes. Can be individually cut to fit actual shoe size. They have a good grip on the bottom as they do not slip after being placed.