Youll notice the difference as soon as you put them in. Then you start running ? and youll never want to run any other way. Light, dynamic and pleasantly supportive, RUNPRO does its job: 100% power transfer to the ground. Less fatigue in the feet and calf muscles. You can reach new personal bests, whether in minimalist - or classic running shoes with a cushioned midsole and a 10mm drop. Get ready for the next level of running enjoyment! Deep heel cup - For a better in-shoe fit. Triple layers for optimum moisture wicking - Fewer blisters thanks to the specially developed mid-layer. 3D DAT for natural foot guidance - Dynamic arch technology made from silver Nylon 6 composite. PROPO+ for maximum rebound- Dynamic propulsion thanks to special forefoot material. Medium Rebound PORON Cushion - Outstanding performance cushioning during initial foot contact.