Carbon Fiber Insole for Pain Relief of Turf Toe, Hallux Rigidus and Limitus, Foot Fractures RecoveryCarbon Fiber Insole for Pain Relief of Turf Toe, Hallux Rigidus and Limitus, Foot Fractures Recovery DESIGNED FOR FOOT INJURY RECOVERY: Freeior 100% carbon fiber flat plate can limit foot bending to relieve pain from turf toe, hallux rigidus & limitus, sprained or morton's toe, etc. Doctors often recommend these insoles. This is Freeior pro grade high stiffness insole, Not recommended for users without foot problems or seeking soft foot feel.