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Experience the WaveSpring™ difference!
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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!
"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
Shoe Technology Review, July 2003
"I feel it is the first technological advance that has been truly meaningful
in the shoe industry in many years."
Donald A. Chu Ph.D., PT, ATC CSCS
Director, Athletic Training & Rehabilitation
Stanford University
*Patented and patents pending.
**Sports Biomechanics, Inc., Michigan State University, May 2001
Experience the WaveSpring™ difference!
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| Here are the results from the Shoe Spring Post-Purchase Customer
Survey |
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| The
institute for policy and econimic development (IPED) ath the University of
Texas. |
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| Overall,
response to the shoe was very positive. Approximately 47% of all customers |
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| receiving
surveys responded withn the three week period. |
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general, the survey instrument measured custoers overall satisfaction on a
variety |
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| of
issues concerning the shoe. These included overall comfort, durability,
price and a |
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| variety
of other measures concerning the purchase experience. The results of the
survey |
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| show
that the great majority of respondents seem to be satisfied with the
product (93.4 |
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| percent),
would purchase the shoes again (89.6%), and would recoend the |
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| shoes
to a friend (90.8%) |
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| Survey Says |
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| Age Groups |
Frequency |
Percent |
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Activity |
Frequency |
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| 30
and below |
9 |
7.1 |
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Running |
58 |
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| 31-50 |
49 |
38.9 |
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Walking |
102 |
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| 50-79 |
68 |
54 |
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Aerobics |
13 |
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Cycling |
17 |
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| Sex |
Frequency |
Percent |
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Cross Training |
20 |
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| Male |
83 |
66.4 |
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Weight Training |
31 |
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| Female |
42 |
33.6 |
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Court Sports |
4 |
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Baseball |
2 |
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| Weight of Shoe |
Frequency |
Percent |
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Softball |
1 |
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| Above
average |
43 |
35 |
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Football |
0 |
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| Excellent |
59 |
48 |
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Basketball |
3 |
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Soccer |
1 |
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| Style / Appearance |
Frequency |
Percent |
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Golf |
6 |
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| Above
average |
44 |
35.8 |
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Work |
20 |
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| Excellent |
37 |
30 |
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| Overall Comfort |
Frequency |
Percent |
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Sports-Related injury |
Frequency |
Percent |
| Above
average |
32 |
26 |
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Yes |
24 |
19.2 |
| Excellent |
78 |
63 |
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NO |
101 |
80.8 |
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| Overall Cushioning |
Frequency |
Percent |
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Extra protection from Injury |
Frequency |
Percent |
| Above
average |
30 |
24.4 |
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Yes |
75 |
68.8 |
| Excellent |
82 |
66.7 |
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NO |
27 |
24.8 |
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| Overall Stability |
Frequency |
Percent |
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Reduces Fatigue on Legs/Feet |
Frequency |
Percent |
| Above
average |
45 |
36.9 |
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Yes |
104 |
86.7 |
| Excellent |
60 |
49.2 |
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NO |
16 |
13.3 |
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| Overall Cushioning |
Frequency |
Percent |
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Experience with ShoeSpring |
Frequency |
Percent |
| Above
average |
30 |
24.4 |
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Dissatisfied |
8 |
6.5 |
| Excellent |
82 |
66.7 |
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Satisfied / Extremely Satisfied |
113 |
91.1 |
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| Overall Cushioning |
Frequency |
Percent |
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Overall Experience |
Frequency |
Percent |
| Above
average |
30 |
24.4 |
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Dissatisfied |
4 |
3.3 |
| Excellent |
82 |
66.7 |
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Satisfied / Extremely Satisfied |
113 |
93.4 |
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| Purchase Again? |
Frequency |
Percent |
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Recommend to a Friend |
Frequency |
Percent |
| Yes |
103 |
89.6 |
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Yes |
109 |
90.8 |
| No |
12 |
10.4 |
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No |
11 |
9.2 |
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| Research
& Development Consultants |
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| Sport
Biomechanics, Inc |
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| Ray
Fredericksen, |
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| Testimonials: |
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| Dr. L
David Williams, D.P.M., Ed.D. Diabetic
patients benefit |
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| Dr.
Oliver R. Smith, JR., D.C.
Chiropractic patients benefit |
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| Richard
B Novick, D.D.S. Chronic
Low Back Problem |
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| David
A Welch, Collegiate Coach, 2 time Olympic Trials Qualifier, 6 time all
American |
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| Chris
Rowley El Paso, TX Running
Benefits |
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| Micheal
Cohen Atorney at Law, Parkinson's
Disease and back to work |
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| Jason
Rabedeaux UTEP Mens Head
Basketball Coach Increase
in Vertical Leap (Basketball) |
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| Chris
Wallace General Manager Celtics
Walking on air |
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| Greg
Lackey, Assistant Basketball Coach University of Denver,
Amazed by durability |
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| Mika
Laaksonen, UTEP Throws Coack, Back
problem(Thorasic outlet Sndrome) and (Knee Cartilage Damage) help |
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| Mark
Balsiger, El Paso TX, Battle against Father Time.. |
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| Bob
Kitchens, Head Track Coach UTEP,
Shoespring Delivers - no gimics |
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| Felix
Hinojosa, Head Cross Country Coach , Quicker Recovery, Less fatiqued |
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| Matt
Farris, Soccer Benefits |
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