The SIDI Metatarsus Insert is an essential replacement component designed to reinforce protection across the metatarsal area. Constructed from rigid nylon, it adds a protective layer that helps guard the top of the foot from impacts, slips, and trail hazards during aggressive riding. Easy to install, this insert helps restore your boots’ protective structure and maintain dependable performance in demanding off-road environments. It’s a practical solution for extending boot life while preserving rider safety.