Stability. Agility. Versatility. Crush runs and mixed sport workouts in the lightweight and ultra-reactive Cloud X. The thicker, wider bottom unit ensures stability, security, and support - whatever your workout. Larger CloudTec elements in the outsole are reinforced with Helion Superfoam for cushioning without compromise n a shoe that's constantly responsive. Sidewalls extend up from the outsole on the medial and lateral side to lock feet in place during dynamic side-to-side movements. The new heel cap features molded cushion pads for a discreet look with a supreme gold. Flexible but tough in all the right places, the engineered mesh upper features a function-focused weave pattern for increased durability and padding. Using materials of the highest quality and lowest weight, breathability is assured.