I have this set of not used Magsteps by Nikken. insoles with magnetic and far infrared technologies.. size medium 2021... for dress and everyday shoes.. magnetic insoles. They are quite heavy in the package and weigh 254 grams. will go as small packet tracked airmail up to 500 grams .. INFORMATION ONLINE 1 PAIR OF "NIKKEN MAGSTEPS" EQL-FAR MAGNETIC INSOLES. NIKKEN ITEM #2021 SIZE MEDIUM 7-12. MAGSTEPS ARE NEW IN PACKAGE. THESE CAN BE TRIMMED TO FIT MENS SIZES 7 TO 12. GO BY PICTURES.. NOT WORN BEEN IN STORAGE.. FILED SHELF HALL DOLL RM 4 2022 INV. and I now have a second pair size medium 2021 Med-Magsteps Improved on Label.. Advise which one you wish thank you.. not used in packaging.