I bought an Invisible Shield antibacterial and deodorant insole, which has a patent certificate. It is a functional insole that perfectly combines comfortable cotton + Oslay + antibacterial and quick-drying functions. It adopts 3D texture design and scientific bumps. And the arch support design puts the entire sole of your foot in a massage state, reducing the impact between the ground and the sole of the foot, and has the functions of shock absorption, rebound, antibacterial, and anti-odor.