Asics Gel-Flux 3 Women's Running Shoes Size 8 1/2Boasting GEL cushioning systems and a bouncy SpEVA midsole, these GEL-Flux 3 women's running shoes from Asics are athletic, comfortable, and even a little bit peppy. GEL Cushioning Systems attenuates shock during impact and toe-off phases, and allows movement in multiple planes as the foot transitions through the gait cycle.