SIDI Anti-Slip Heel Insert Don't Slip The replacement SIDI Anti-Slip Heel Insert is a specialized accessory designed to maintain optimal traction and stability in SIDI cycling shoes. Features Engineered to replace worn or damaged heel pads, ensuring continued performance and safety Straightforward installation process: quickly swap out old inserts for new ones, restoring the shoe's grip and preventing slippage during rides Prevents slippage so you can walk while off the bike | Sidi | Anti Slip Heel Insert Men's | Size 38-41 In Black/red