Spenco Propel + Carbon Performance Insoles deliver explosiveness with each foot strike. Turn your everyday trainer into an elite race-ready shoe with the Propel + Carbon insole. Designed by biomechanical experts, this insole features a carbon plate for explosiveness with each foot strike and INergy Foam for next-level energy efficiency

• Carbon Plate provides forward propulsion and explosiveness with each foot strike
• Responsive INergy™ Foam cushioning creates next-level energy efficiency
• Contoured and supportive heel cup
• Metatarsal pad for ideal foot alignment
• Engineered forefoot launch pad
• Includes 1 pair of insoles