The GEL-NIMBUS™ 21 running shoe by ASICS is designed to help men run further thanks to energised cushioning from the GEL™ technology, plus FLYTEFOAM™ Propel technology in the midsole and a SpEVA™ insole for further bounce. Now in a vibrant new colourway, the upper is made from Jacquard mesh to help airflow, while I.G.S™ (Impact Guidance System) technology in the construction helps runners maintain their natural gait. A GUIDANCE LINE™ sole also helps with keeping the line of motion, while there's an AHAR™ heel plug to help the sole withstand wear and tear, and reflectivity for visibility.