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Spira is a young company that is gaining national attention with its remarkable athletic running and walking shoes. Spira is premised upon a proprietary unique shoe technology called WaveSpring™. Energy that is otherwise lost to the ground is recycled to the wearer, providing a remarkable combination of cushioning and energy return. Unlike traditional shoe midsoles made primarily of foams, rubber compounds, or polymers, WaveSpring™ technology stores and disburses energy with every step.
Spira makes it easier to stand, walk, run and compete without the stress and fatigue associated with traditional shoe midsole materials. Spira heel and forefoot spring configurations are engineered for specific activities to meet individual needs. Sport Biomechanics, Inc. tested the WaveSpring™ technology and found it had the highest return of energy of any shoe technology they have ever tested — 87-96%. Traditional midsole materials work through compression and often breakdown quickly. The WaveSpring™ is mechanical. The spring will outlast the shoe. The wearer will have a "new shoe" feel from the first day it is worn to the last!
Spira believes the WaveSpring™ technology will revolutionize the footwear industry as well as the purpose and function of footwear. As soon as you step into a pair of Spira shoes you will understand why.