The sole of SPEEDCROSS has larger lugs with more space and an updated geometry, delivering better push-off grip and braking grip, in all surface conditions. The heel unit of SPEEDCROSS creates a cradle for your heel, ensuring clean foot strike and stability through the stride. SPEEDCROSS uses a completely welded upper, with dissociated sensifit arms. it moves more naturally with your foot, and dials in the comfort. Mud Contagrip: Built for maximum grip on loose, soft, rugged, and uneven surfaces, Mud Contagrip uses deep, sharp lugs made from a compound that focuses on adhesion. SensiFit: SensiFit cradles the foot from the midsole to the lacing system, providing a secure, snug, and virtually customized fit all around the foot.