Designed scientifically based on ergonomics. The enveloping design supports the heel, and the arch of the foot fits perfectly with the arch of the sole. It balances the entire sole of the foot and comfortably supports exercise, walking, etc. [How to fit the size] 1) If replacing the insole of your shoes: Match it to the removed insole. 2) If not removing the original insole: Cut little by little and try it on. If it doesn't fit, continue cutting. *Even if shoes have the same size indication, the fit may vary by manufacturer. *There may be individual differences in the cut lines of the insoles. Please cut little by little without relying too much on the cut lines. The price is for one pair (two insoles). After purchase, please let us know your desired size via message. [Notes] - All products are inspected 100% by our store's standards before shipment. - There may be slight color variations depending on your monitor. - As these are overseas products, there may be slight dirt, scratches, indentations, or size discrepancies. - Please refrain from purchasing if you are overly concerned about minor details.