Foot massage insoles massage shoe pads insoles shock absorption and comfortable clean and ventilate separate sweat and deodorizing washing and using freely can make the blood vessel of thenar outspread absorbing the heat and transmit the heat to apparatuses all over the body urge the deleterious material of blood outside quickly and then make your blood circulate fluently the magnetic massage insole is made up of permanent magnets and high quality plastic this product is uniquely designed scientific construction which has a very good function of thenar massage it can make the blood vessel of thenar outspread absorbing the heat and transmit the heat to apparatuses all over the bady urgethe deleterious material of blood vessel such as calcium lactic acid uric acidexerete outside quickly and then make your blood circulate fluently also can separate sweat and deodorizing you can change the size by cutting according to the available curl line if necessary size max length 26 0cm 10 39 39 fit