The Pro Band KneedIT Knee Guard is an innovative and unique Magnetic device scientifically designed to assist in the relief of minor knee pain commonly associated with Arthritis, Tendinitis and Chondromalacia by placing gentle pressure along the madial and lateral soft tissues of the knee. May be used in conjunction with traditional methods such as taping or wrapping of the knee. Created by Donald Fareed, M.D. consultant to Olympic Athletes, as well as members of the Davis Cup and other professional sports teams. One size fits most.