From 5Ks to full marathons, the GEL-KAYANO™ 30 shoe is designed to provide advanced stability and cushioning properties with less weight. The new 4D GUIDANCE SYSTEM™ helps provide adaptive stability via the shoe's wider basenets, increase heel bevel/forefoot flare, and arch recovery pod. Placed on the inside of the midsole, this adaptive foam helps position your arch for a more balanced stride. We also updated the midsole with FF BLAST™ PLUS ECO cushioning. With approx. 24% bio-based content, this material helps create cloud-like softness in every step. PureGEL™ technology is strategically positioned below the heel and is 65% softer than standard GEL™ technology. Now you can make your distance training feel surprisingly smooth