[Durable Quality: The replacement insoles are made of polymer foam 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 insole provides good ventilation and breathability helping to 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]