asics womens gel kayano 30 running shoes b medium widthStylish, comfortable and supportive. These athletic sneakers check all of the boxes. The new 4D GUIDANCE SYSTEM features a revamped midsole with FF BLAST PLUS ECO cushioning and a 4mm stack height increase, containing approximately 20% bio based content. New PureGEL technology, which is 65% softer than conventional visible GEL technology, is strategically positioned below the heel for a smoother ride.