Split Sole™ Shoe System

The patented Split Sole system allows for the management of horizontal forces and rotation.

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Suite of load management technologies

Designed specifically for the split sole system


Each of the technologies in the SEI suite are designed to absorb energy from unusual and abrupt movements that could otherwise result in potentially injurious loads on knees and ankles.


They are designed to be initially stiff and responsive, then displace after an established threshold is surpassed, then return to their original configuration.

How It Works

SEI has developed a dual technology system consisting of the Split Sole and Smart Spring.


The Split Sole and Smart Spring work in tandem to absorb horizontal and rotational loads when they exceed a performance threshold and the likelihood of injury increases.