The OPPO Daily Comfort Insoles Series includes a selection of basic insoles constructed of soft resilient foams that give durability and optimum comfort for everyday usage. OPPO Daily Comfort Insoles reduce friction between shoes and the bottom of the foot while also providing great moisture wicking for breathability. The contoured form guarantees an excellent fit and allows for versatile application in a variety of shoe types. Magnetic particles, for example, can give a massaging action to promote circulation and restore vitality.