With comfort and fit at the forefront, the ASICS Gel Flux 4 sneaker is a versatile runner that delivers a spring-loaded ride mile after mile. This 'Black' version sports a simple mix of breathable mesh and supportive overlays, with Trusstic System Technology reinforcing the midfoot. SpEVA foam paired with full-length, signature GEL technology at the forefoot and rearfoot provides maximum energy return, while a Durasponge rubber outsole enhances underfoot cushioning.