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!
WaveSpring™ technology will not break down.
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!
*Patented and patents pending.
**Sports Biomechanics, Inc., Michigan State University, May 2001
Experience the WaveSpring™
difference!
www.spirafootwear.com
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