What is Gore-Tex®?


Gore-Tex® is the product of W. L. Gore & Associates, whose founder, Bob Gore, discovered ePTFE (expanded polytetrafluoroethylene) in 1969.

Gore membranes protect the wearer from water, but can also prevent blood, bodily fluids, chemicals and other hazards penetrating the garment.

Gore-Tex® membranes are hydrophobic, meaning they are durably waterproof, but also windproof and breathable.  Therefore, your body always stays dry and comfortable when you wear Gore-Tex® garments.

The size and spherical shape of the smallest water droplet is 20,000 times bigger than the microscopic pores in the Gore-Tex® membrane, so this means that water molecules cannot get through.

Water vapour molecule Pore in the Gore-Tex® membrane Water droplet


However, the Gore-Tex® pores are 700 times larger than a water vapour molecule and this allows perspiration to move through the membrane from the inside of the garment.

The following Gore fabrics are available in Bell garments:                                            



How are Gore-Tex® garments tested?

All Gore-Tex® fabrics undergo significant testing before being used to manufacture our garments.  Tests include:

  • Durability
  • Moisture vapour transfer
  • Water repellency
  • Rain Room


The Rain Room is an extreme test carried out on prototype garments where they endure simulated hours of rain before going into production.

A rotating mannequin is dressed in the garment and exposed to a range of rain conditions from moderate to heavy, vertical and wind driven.  Any leaks are detected by sensors on the body of the mannequin and the design will be rejected for modification if any are found until its performance is improved to pass the test.


For more information see Gore's Workwear Website