SPRINTER’S KING

SPRINTER’S KING IS A RUNNING FOOT.
SPORT DEVICE AND NOT MEDICAL DEVICE.

The Innovative morphology of Sprinter’s King: 40° angle between virtual V° metatarsus and virtual heel (posterior vertex), it allows optimization of ankle plantarflexion;
the 15° angle of the bracket is aimed to give the same functionality of triceps sural muscles and Achille’s tendon; the distance between toe-vertical line weight and vertical line weight and the posterior vertex is the same;
the width’s foot is similar to the sound limb foot; the different thicknesses of laminate have the same functionality as the sound limb muscle and tendon.
The Sprinter’s King eliminates the negative force component opposite to the forward direction that has the other running feet on the market; it allows a higher ankle plantarflexion; it allows the maximum elastic response, an optimum ratio between forces, and the maximum peak of energy response, following midstance phase.
The first running foot with 85% efficiency.

 

Material: carbon fiber. Warranty: 12 months

Category:
Code 1.001.01.I.S 1.001.01.I.H
Size I
Category Soft Hard
Shoe number 30-33
User’s range height 150-160
Weight range

40-60

 60-90
Ground-Foot’s apex distance 325-390
Foot’s apex distance to the vertical axis 46-90
Code 1.001.01.II.S 1.001.01.II.H
Size II
Category Soft Hard
Shoe number 34-37
User’s range height 160-170
Weight range

45-65

 65-100
Ground-Foot’s apex distance 365-440
Foot’s apex distance to the vertical axis 53-65
Code 1.001.01.III.S 1.001.01.III.H
Size III
Category Soft Hard
Shoe number 38-41
User’s range height 170-180
Weight range

45-70

 70-110
Ground-Foot’s apex distance 59-75
Foot’s apex distance to the vertical axis 46-90
Code 1.001.01.III.H 1.001.01.IV.S
Size IV
Category Soft Hard
Shoe number Over 42
User’s range height Over 180
Weight range

60-80

 80-120
Ground-Foot’s apex distance 450-540
Foot’s apex distance to the vertical axis 65-90

Sprinter’s King characteristics

TESTING

Since 2016 Roadrunnerfoot start the collaboration whit Berlin Cert:
ROADWALKING is the first carbon fiber foot tested and validated from Berlin Cert.

TESTING OF PRODUCTS BY POLITECNICO OF MILAN
Roadrunnerfoot is the only company in all the world that tests your products external-ly, by the University of Politecnico in Milan. After testing Politecnico give one official report about the test of products and we send all the document to the health ministry in order to have the CE conformity and the certification.

Athletes who compete wearing Sprinter’s King

Addis Abeba

2012

NAIROBI MARATHON

2017

DEEJAY TEN

Firenze - 2007

Milano City Marathon

2012