ASICS Gel-Nimbus 18 Women's Running Shoes Size 8.5 FluidFit: ASICS FluidFit upper technology combines multi-directional stretch mesh with stretch gussets that adapt to the athlete's foot, creating a truly personalized glove-like fit. FluidRide: FluidRide provides the best combination of rebound and cushioning properties with reduced weight and exceptional durability. GEL cushioning systems in the heel and forefoot: Attenuates shock during the impact and take-off phases, and allows movement in multiple planes as the foot goes through the gait cycle. Heel Clutch System: Exoskeletal heel counter provides better support and creates an improved heel fit environment. Seamless construction Very Good Clean Pre-Owned Condition. See Pics.