N-ERGY™ 2.0 A new asymmetrical three-chamber design, N-ergy™ 2.0 provides a unique supportive cushioning experience as it compresses upon impact, to absorb heel shock. It then rebounds to its original shape for maximum responsiveness. For additional pronation control, the medial (inner) chamber is reinforced with an additional stabilizing element made of Dupont's Hytrel®.

GRAPHITE ROLLBAR® The Graphite Rollbar® is New Balance's premier pronation control device. A lightweight flat or molded piece of graphite material positioned in the heel portion of the midsole, the Graphite Rollbar provides motion control, maximizes rearfoot stability and prevents excessive pronation. By stabilizing the foot as it rolls inward, it provides exceptional support for moderate and severe over-pronators.
MEDIAL POST The Medial Post is a wedge of higher than normal density C-Cap material that provides pronation control. It extends from the heel to the ball of the foot but can vary in length to offer degrees of motion control. By stabilizing the foot as it rolls inward, the Medial Post provides sufficient support for the mild to moderate over-pronator.
TPU POST A stability device made of thermoplastic urethane (TPU), the TPU Post is placed in the heel on the inner side of the shoe to control pronation and/or the outer side to control under-pronation. Capable of preventing rolling in both directions, the TPU post can be positioned to address the needs of both under-pronators and over-pronators.
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