Runner K3 - K4 Foot

The Runner is characterized by a durable and lightweight carbon spring providing the athlete not only with a powerful drive, but with stable turning characteristics. The dynamics and spring stiffness of the Runner are adaptable according to individual requirements by shifting the adapter alongside the carbon spring.  This has no effect on the basic alignment.

Features and Benefits:

• Anterior positioning of the adapter for relaxed running and comfort due to an increased spring deflection
• Posterior positioning of the adapter for powerful running due to an increased forward propulsion
• 1E91 comes with the carbon blade only
• Please order the corresponding adapter, sole and spike pad separately