Spira Volare Athletic Men's Shoes

Cushion Trainer - WaveSpring Technology Unlike traditional shoe midsole 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. 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! 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 its worn to the last! Tri-Spring Configuration