Durable Quality: The replacement insoles are made of EVA and pigskin, which can be used for a long time. Please be sure to check your shoe size carefully before purchasing Good Design:The ergonomic arch support design provides adequate support and cushioning, reduces knee injuries and provides sports protection Breathable: The air holes in the insole can enhance air circulation, provide better ventilation and breathability, help keep your feet dry and odor-free Lightweight: Our insoles can provide a lighter wearing experience, reduce the burden on your feet, and make your feet more relaxed Easy to Clean: Made of easy-to-clean material, machine washable. If you have any questions about the product, please feel free to contact us