Spira

We're convinced that the WaveSpring technology has the potential to revolutionize the footwear industry, and in the process, forever change the purpose and function of footwear. Unlike traditional coil or conical springs, the WaveSpring is laterally stable, compact and lightweight. As a result, we currently have developed a remarkable energy return technology for footwear. According to a biomechanical study conducted by the Shoe Lab at Michigan State University in 2001, our springs return an astounding 87-96% of energy.