Upper: EverFoam slow recovery foam heel for personalised fit. Performance synthetic with lightweight breathable air mesh upper. Midsole: ArchTec links forefoot and rearfoot while providing a natural ride. DuoCELL greatly reduces the impact forces upon heel strike. CM-EVA to provide cushioning and to guide the foot from heel strike to toe off. Outsole: EVERTRACK high abrasion resistant rubber outsole. Co-moulded spike housing with 11 anatomically positioned cleats for optimum traction, comfort and support, with integrated forefoot flexibility. Supplied with screw in rubber studs for half spike option. Removable insock with EVA lasting for additional comfort.