Asics GEL-KAYANO 30 men's running shoes are expertly crafted to offer advanced stability combined with exceptional cushioning properties - from 5km runs to full marathons. The new 4D GUIDANCE SYSTEM™ helps provide adaptive stability so you'll experience greater support and a more balanced stride. The redesigned midsole has FF BLAST™ PLUS ECO cushioning that is 4 mm higher. With a 20% bio-cotton content, this material helps to create a puffy-like softness. New PureGEL™ technology is strategically placed under the heel for a smoother running experience. It's 65% softer than conventional GEL™ technology, so your endurance training will be smoother than ever.