[Looking for the latest version? Check out the men's On Cloud X 2.0.] Looks great, feels even better The details are what set the Cloud X apart. Dual-density sockliner, seamless shoe tongue, and new-generation inner materials set a new bar for comfort that can't easily be seen - but definitely will be felt. New upper with no downside The performance upper of the Cloud X uses an engineered mesh of the highest quality and material strength. Light and breathable in all the right places, it supports you without suffocating your foot's freedom of movement. Real deal in heel comfort Lean, engineered heel cap with second-to-none precision-molded cushioning pad technology keeps you stable without strain. Or more simply put: slip your heel into the Cloud X to have it stay comfortably in place. Move more in Zero-Gravity Built from the latest evolution Zero-Gravity foam, the Cloud X has a CloudTec® sole made to move in all directions flawlessly. Wherever the run may take you, this is your perfect training partner to get there.