Asics has taken one of the key technologies from its concept Metarun shoe (released earlier this year) and made it the focal point of this high-mileage shoe. The ‘Flytefoam’ in the midsole is a cushioning compound that Asics says is 55 per cent lighter than any other midsole foam on the market. The result? A shoe designed to be as reliable for neutral runners as the Cumulus and Nimbus, but at a substantially lower weight. Bottom line A lightweight neutral shoe that offers first-class cushioning.