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The Future Is Now. WaveSpring™ Technology is here and it is coming to a shoe near you! Spira's™ patented WaveSpring™ technology may be the most significant advancement ever achieved in the footwear industry.* WaveSpring™ returns energy with every step. Ray Fredericksen, president of Sports Biomechanics, Inc. compares typical midsole materials found in many athletic shoes to running in sand. While initially perceived as soft and comfortable, these shoes require the wearer to exert greater effort. Muscles must work harder, causing fatigue and increasing the risk of injury. Unlike traditional shoe midsoles made primarily of foams, rubber compounds, or polymers, WaveSpring™ technology stores and disburses energy with every step. Testing performed by an independent source reports that 87% - 96% of the energy is returned from the WaveSpring™. This is the highest energy return score for any midsole material ever tested.** WaveSpring™ is light and compact. The WaveSpring™ is laterally stable, lightweight, compact, and can easily fit into a typical shoe midsole. The technology is in the heel and forefoot of the shoe. As such, it has the appearance of a normal shoe. Looking from the outside no one will know you have a spring in your step but you! " Unlike rubbers and polymers, the springs have an almost infinite fatigue life. The shoe will fall apart before the spring performance degrades." Popular Mechanics magazine and Shoe Technology Review, July 2003 Experience the WaveSpring™ difference! Also see: Spira men's shoes and Spira women's shoes |
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