Acumed wristbands are made of soft elasticised black material and can be used for knees and ankles or anywhere along the limbs. The magnet is discreetly housed inside the strap and gently contoured to follow the natural curves of the body and limbs. The size can be adjusted by means of a toggle fastener. This dual purpose fastener counter balances the magnet and provides a gentle rocking motion of the band.Worn for only a few hours during the day, the wristband will aid those suffering from Tennis Elbow, Painful Wrists, Hands, Shoulders and Ankles. Used alone or in sets, with Acumed bands you can give yourself whole body therapy. Fit loosely and the gentle swing of the toggle will sweep and caress the magnetic field on the affected part of the body.