The ASICS GEL-NIMBUS 17 features technologies such as Fluid Ride, a 2 layered midsole construction featuring a combination of both SpEVA and Solyte. Another key feature for the 17th edition is the latest evolution in ASICS midsole technology, FluidRideTM improves on it's previous generation and provides the ultimate combination of bounce back and cushioning properties with reduced weight and exceptional durability. The upper construction known as FluidFitTM combines multi-directional stretch mesh with stretch reinforcements that adapt to the athlete's foot, creating a truly customised glove-like fit for the wearer. The Nimbus 17 come gender specified, Separate pieces of material is in the forefoot of the midsole, meanwhile a design built on lasts and molds that are tooled specifically to designated widths. A new addition to the many technologies featured is the Exoskeletal heel counter which provides improved support and creates an improved heel fitting environment. The customisation goes further with P.H.F. securely hugs the heel with memory foam in a durable execution. ASICS® design philosophy employs linked componentry to enhance the foot's natural gait from heel strike to toe-of, accomplished through an impact guidance system aiming to leave a better overall feeling and comfort throughout. An improved wearers gait efficiency is given from the vertical flex grooves that decouples the tooling along the line of progression for enhanced gait efficiency. The outsole is produced from a Durasponge technology, a blown AHAR rubber compound that gives enhanced cushioning and durability in the forefoot. AHAR+ also features a strong material that's strategically placed in critical areas of the shoe to provide excellent grip without compromising the shoes durability, the + means the shoe is lighter that the previous generation technology but not taking away the overall efficiency or productivity.