MOST RECOGNIZED HIGH PERFORMING FOOTWEAR. After 18 years of innovation, the NimbusR series continues as one of ASICS' most recognized high performing footwear. The new GELR placement offers modernized geometry of cushioning, designed to improve adaptability and mitigate brisk impacts. Improved Guidance LineR technology harmoniously syncs componentry to embrace the motions of the runner's gait cycle.FEATURES ASICS FluidFit upper technology combines multi directional stretch mesh with stretch reinforcements that adapt to the athlete's foot, creating a truly customized glove like fit. Rearfoot and Forefoot 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. Guidance Trusstic System This Trusstic System integrates Guidance Line construction for enhanced gait efficiency while providing midfoot structural integrity.