Sorbothane Medical Blue Heel PadProduct Description Used where both sock absorbtion and lift are required. Relieves calf strain and helps in the treatment of Achilles tendonitisBenfits Designed for comfort and optimum shock absorbtionLightweight Streamline constructionCan provide relief from back, muscle & Joint painsLimits trauma from backproblems, joint pain, tendonitis, knee pain etcAnit-bacterial advanced nano silver technologyMeasurement: Size Shoe Size: 3 - 5 ? 6 - 8 ? ? 9 - 13 ? SorobothaneThe Sorbothane Medical insoles are scientifically proven to absorb harmful shock waves associated with foot strike. The advanced new range has now been developed to provide even greater comfort and is designed with a new lightweight, streamlined construction. Scientifically engineered to be a natural extension of your foot, Sorbothane Medical insoles provide pain relief for back, muscle and joint painsSorbothane Medical insoles limit trauma linked to the impact of the body on the ground (e.g., back problems, joint pain, tendonitis, fatigue fractures, knee pain, etc.). They prevent the recurrence of old injuries, shorten lay off with injury and other unrivalled comfortSorbothane?s anti-bacterial top sheet contains advance nano silver technology to wick away moisture