[ Correction & Protection ] Adjustable Heel Wedge Inserts can save you from knees pain and deformed foot caused by an incorrect walking posture. This heel inserts is design for bow legs, knee pain, foot alignment, osteoarthritis, knock knees, bowlegged-ness, pronation, posture problems, and other issues caused by uneven foot alignment.[ Cupped Heel Support ] This supination & pronation heel wedges inserts are designed according to the curvature of the human heel, as well as the scientifically measured slope. This Medial & Lateral Heel Insoles will fit the shape of your heel, provide stable support, wrap your heel and reduce foot fatigue from elevated height.[ Adjustable Layers ] These orthopedic supination & pronation correction heel wegdes layers can be used individually or as a combination, allow you to build up the degree and height by adding layers yourself. The TOP layers is 0.45", and the other thinner layers is 0.2". The height difference corrects the strength of the internal rotators, changes the way of walking with force, and makes the muscles that are not commonly used begin to train and fire, thus improving the body, legs, and walking