The Sidi Crossfire Metatarsus Insert is a durable and essential replacement part for Crossfire 2, Crossfire 2 SRS, Crossfire 3, and Crossfire 3 SRS boots. Designed to protect the top of your foot, this rigid nylon insert helps prevent damage in case of contact with the footpeg or ground. It offers quick and easy replacement, ensuring that your boots remain reliable and protective throughout your ride.