?Premium Graphene Materials? Rigid Carbon Fiber Shoe Insert offers high strength and stiffness, lightweight, durability and corrosion resistance. It is widely used in specialized high-performance products such as aerospace, racing and sports equipment. NOTE: This Rigid Carbon Fiber Foot Plate is more comfortable to wear under softer insole. ?Bettter Fit?The Carbon Fiber Insole is 1.3 mm thick and features a 180° flat design that is lightweight and stiff. The carbon fiber insole must be 1.0 - 1.5 cm shorter than the removable shoe insert in your shoe to ensure that the carbon fiber insole is no longer than the length of your existing insole so that you can easily slip carbon fiber insole in and out of your shoe. ?Rigid Shoe Insert for Sports?Carbon fiber insoles can be used not only for treating foot health problems, but also for a variety of sports activities such as running, hiking, basketball, soccer and track and field. It has good support and stability, can be bent and return to its original shape. Allows you to jump higher, be more explosive, have better injury protection and recovery. The Carbon fiber insert can be used in different athletic shoes like sneakers, hiking boot, baseball, tennis, gol. ?Relieve Your Pain?Carbon Fiber Insole can be used for Pain Relief & Recovery of your foot, avoiding pain caused by excessive activity by minimising range of motion and reducing pressure on the forefoot and midfoot when walking or running. It is ideal for foot injuries such as Turf toe, Morton's toe, Hallux Limitus, Hallux Rigidus, Lis Franc injuries, Metatarsal stress fractures, Phalangeal fractures, Jones fractures, mid-foot sprains, and post op foot injuries that require a rigid supportive in. ???1 Pc Foot Plate Shoes Insert?Our Carbon Fiber Insole is sold as a SINGLE Piece,which works for either foot, just flip it over. This rigid insole is universal and suitable for both men and women.