Support and cushion working together in the name of maximum comfort.
Trusted Stability We've shifted our focus beyond the feet to the most injury-prone part of a runner's body: the knees. GuideRails keep you moving comfortably by keeping excess movement in check. 
Soft Cushioning Thanks to our patented BioMoGo DNA midsole, ultra-softness and durability aren’t mutually exclusive; ultimate sockliner enhances comfort
Enhanced Fit Enjoy comfort from heel to toe with a spacious yet secure fit thanks to an engineered-mesh upper and conformable embroidered saddle.
Additional Benefits:

• A full-length Segmented Crash Pad accommodates any foot landing and delivers smooth heel-to-toe transitions.
• GuideRails® support technology significantly reduces weight compared to prior versions.
• The Ultimate Sockliner adds cushioning for a plush in-shoe feel.
• The embroidered saddle and eyestay offer a modern look.