The i-Run team says
                    Mach 4 M - Translation in progress. If you need further details about this product, our team is here to help: contact@i-run.com
                
                
                
            Technologies
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                            Profil de semelle incurvé équilibré sous les métasThe geometry of the midsole with a curved profile under the metatarsals is designed to reduce fatigue and promote a smooth and predictable foot roll throughout the stride. The midsole geometry with a curved profile under the metatarsals starts further from the instep, with a transition zone placed in front of the metatarsal heads. This provides a more stable base for metatarsal support. 
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                            ProflyThis cushioning provides more flexibility at the heel to absorb shocks and more firmness at the forefoot for propulsion and energy return. 
 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                 
                                     
                                     
                                     
                                     
                                     
                                    