FluidFit Technology: Mesh which stretches in EVERY direction combined with other stretch materials for a glove-like fit; ComfortDry Sockliner: Cushioning and performance with anti-microbial properties - can be removed and washed; Impact Guidance System: Uses linked components to enhance the foot's natural gait from heel strike to toe-off; Guidance Trusstic: Guidance construction for enhanced gait efficiency while providing midfoot structural integrity; Guidance Line: Vertical flex groove decouples the tooling along the line of progression for gait efficiency; Discrete Eyelets: Individually placed eyelets disperse lace tension for a personalised fit and better comfort from upper; Fluid Ride Technology: Lightweight, 2 layered midsole that offers superior cushioning and improved bounce-back; GEL Cushioning: In rearfoot and forefoot attenuates shock during impact and allows for a totally natural movement; SpEVA 45 Lasting: Midsole material offers exceptional cushioning and next-level comfort; Clutch Counter: Exoskeletal heel counter offers improved support and creates a better heel fitting environment; Lightweight AHAR+: Blown AHAR outsole delivers superior cushioning, exceptional durability and enhanced ride to the foot; 3M Reflective: Reflective detailing to upper ensures you are seen in low light conditions; Glow In The Dark: Accents to the upper ensure you are seen in low light conditions; Engineered to deliver maximum comfort to runners with a neutral pronation, these advanced running shoes fuse next-level comfort with exceptional support for the best ride possible.