Spira - Genesis II (White/Black/Bronze) - Footwear
Spira - Genesis II (White/Black/Bronze) - Footwear Description
Zappos.com is proud to offer the Spira - Genesis II (White/Black/Bronze) - Footwear: Setting the performance standard for Spira's running footwear line, the Genesis II combines Spira's engineered cushioning technology and proven stability features in one shoe. ; The unique WaveSpring technology, found in both the heel and the forefoot, provides unsurpassed cushioning and energy return while providing a stable platform for runners who have stability needs. ; The WaveSpring does not breakdown and maintains like new cushioning performance throughout the life of the shoe, while reducing impact shock, stress and fatigue. ; The midsole design incorporates a special flex plate for increased flexibility and a firmer density medial post and external shank for support, which works with the highly supportive upper design to resist overpronation dynamics. ; The Genesis II contains WaveSpring technology in both the heel and the forefoot to provide a remarkable combination of cushioning and energy return with a high density medial post for stability. ; Shoe weighs 14.5 oz.
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