Double react soles for extra cushioning and lightweight long distance walking and jogging Stretchy knit upper that adapts to the changing shape of your foot as you walk. Responsive mid-sole cushioning. Prime upper wraps the foot in adaptive support. Natural movement fused with moulded heel counter provides a natural fit that allows optimal movement Sturdy build due to TechZone foam combined with knitwear ankle cuffs locking system giving extra breathability and comfort TechZone™ foam to create maxmium traction, extraordinary in wet or dry conditions =