Details: Looking for a smooth comfortable ride? Then the ASICS GEL-Flux 4 is the running shoe for you. GEL Cushioning Systems in the heel and forefoot absorb the shock of impact, while SpEVA cushions and returns energy with every step, creating a plush, cushioned ride mile after mile. Breathable mesh upper with synthetic overlays for lightweight support and lockdown. Forefoot and heel GEL Cushioning Sytems absorb and disburse shock with every step. SpEVA midsole resists breakdown for long-lasting bounce back and energy return. Full-length Guidance Line flex groove encourages a smooth, natural transition from heelstrike to toe-off. ASICS High Abrasion Rubber outsole under the heel for durability where you need it most. DuraSponge under the forefoot for responsive cushioning and increased flexibility. Wt. 12.4 oz.