Made from recycled materials, engineered for the nuances of each gender's biomechanics, and powered with the only truly active technology in athletic footwear out shoes have never felt better on the foot, or on the run. You are unique and powerful, now you have the shoes to match. The new generation features substantial fit upgrades to keep you comfortable and at your best. Our gender tuning configurations enhance security and eliminate potential friction and pressure points. Action/Reaction technology The revolutionary full foot Action/Reaction technology system consists of lugs on the sole that compress and rebound with each stride. This quickly absorbs impact shock and bounces back to deliver responsive, trampoline like cushioning with less energy loss than traditional foam. Soles good for the Earth's soul With average soles taking over 40 years to biodegrade, these feature EcoPure which attracts naturally occurring microbes to break down your shoes 75% quicker in landfills. Made from recycled materials to save resources and reduce waste without compromising quality, durability or performance.