Function 1. Gel material, shock absorption and comfortable, clean and ventilate 2.Therapy massage can strengthen health and resist ill 3.Dismantle the harmful material of blood vessels such as calcium, lactic acid, uric acid exudate out quickly 4.Make your blood circulate smoothly 5.You can change the size by cutting according to the available curl line if necessary Specification Color: as the picture Material: Fiber + Medical Silicone Gel Size: size 35-45 (Divided into men's and women's styles, men's foot pad size 41-45, can be cut, women's foot pad size 35-40, can be cut) (Suitable for most Europeans) Package included 1 x 1 pair of magnetic massage insole (with opp bag package)