Asics Gel Nimbus 21 Ladies Running Shoes. FlyteFoam Technology to the midsole ensures responsive cushioning. The Gradient Mesh, combined with 3D print provides flexibility and support.The guidance line is a vertical flex groove to the sole, to ensure an efficient run.> Ladies running shoes> Engineered Gradient Mesh combined with 3D Print> Impact Guidance System (IGS)> TRUSSTIC SYSTEM> External heel counter> Heel clutching system> Rear and front GEL cushioning> FlyteFoam Technology> Guidance Line Technology> SpEVA 45 lasting> AHAR outsole> Synthetic / textile upper, Textile inner, Synthetic soleFor product specific queries please contact the ASICS customer service hub:Tel: +44-1925599784 / Email: consumer-uk@asics.com