Gum Rubber sole
Primeknit upper – Wraps the foot in adaptive support and ultralight comfort.
Supportive cage – Locks down the midfoot.
FitCounter – Moulded heel counter provides a natural fit that allows optimal movement of the Achilles.
Boost Midsole – Has an amazingly bouncy feel without being too soft, and that makes for a light, fast run.
Torsion System – For a stable ride.