Variable stretch knit mesh enables your foot to adapt to its shape, resulting in flexible movement and comfort throughout the day. The arch-supporting high-density open cell PU foam not only allows air circulation for a cooler and healthier footbed but also provides excellent support. The thermal controlled rubber material ensures long-lasting and responsive cushioning, which keeps your feet energized. Additionally, these shoes are a5500 and Medicare approved, and they come with a removable footbed for added convenience. The stretchable and flexible design further enhances their comfort and fit.