The GEL-KAYANO 31 running shoe combines maximum support with ultimate comfort to focus on your run. Our most advanced stability shoe to date is designed to help you run farther for longer. Thanks to adaptive stability and superior comfort. you could be running all day.The 4D GUIDANCE SYSTEM technology is a revolutionary system to stabilize your stride during the run. without compromising comfort at any point. In fact. with the combination of the new PureGEL technology and the soft FF BLAST PLUS ECO foam. you will enjoy an incredible feeling of comfort every time you hit the streets.