Carbon compression bars help to support the pilot’s legs, and the Dyneema thread pattern is far from random. The complex web was developed based on an algorithm which determines stress patterns in the harness. The pattern was specifically designed to cover areas of increased load.

Fred explains the Dyneema structure:

The overall Dyneema fiber structure has been designed by the superposition of individual networks. Each network was designed and dimensioned especially for a specific kind of stress/load.

In the animation, you can see the details of the Dyneema fiber networks in an exploded view. Each color is an individual network.

The major networks are the Yellow for leg support and Green for the back support. They carry most of the pilot weight load during straight flight. During the takeoff and landing phase, they give the load to the Pink and White networks.