FluidFit™ 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. FluidRide™ FluidRide™ provides the ultimate combination of bounce back and cushioning properties with reduced weight and exceptional durability. 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. Guidance Line® Vertical flex groove decouples the tooling along the line of progression for enhanced gait efficiency. Heel Clutching System™ Exoskeletal heel counter provides improved support and creates improved heel fitting environment. Discrete Eyelets Independently placed eyelets disburse lace tension, creating a customized fitting environment and enhanced upper comfort.