b'X-LITE SHOCK ABSORPTION Xeleros Guidance PropulsionUNDERFOOT System GPS . The Propulsion element cradles the rear foot REARFOOT & FOREFOOT and extends forward to guide STABILITYROCKER the foot into a neutral position FOOT FRAME throughout the gait cycle. The Carbon Fiber Slingshot propulsion plate provides CARBON FIBER ANDtorsional stability, keeps the foot TORSIONAL STABILITY in alignment, and helps to reduce impact pressure. TheMIDSOLE dual layer X-Lite midsole EVA-PU FORMULA = CUSHIONEDSTABILITY provides cushioning and speeds up heel to toe transition.LIGHTWEIGHT , HIGH ABRASIONRUBBER OUTSOLEGUIDANCECUSTOM FIT PROPULSIONSYSTEMSYSTEM'