What Is the Vazee Sigma and How Does the Boa® Closure System Work?

The Vazee Sigma is a running competition spike without traditional laces. It has a Boa® Closure System, which provides an alternative to the traditional laces for customized comfort and no pressure points.

Boa® Closure System

  • To tighten, make sure the dial is pushed in. Turn clockwise (right) to tighten. Leave the dial pushed in during use.
  • To loosen, pull out the dial.

Boa® is a third party supplier, and their closure system is used across a variety of sports, by a variety of companies. Click HERE for more details.


The Vazee Sigma Glory and Vazee Sigma Pride (pictured above) are limited edition styles currently available. All colorways and available sizes can be found HERE.

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