With a 3-layer construction, a fine nylon mesh is bonded to the interior surface of the garment to protect the GORE-TEX® membrane from abrasion and dirt. With a 2-layer construction, a thin mesh or other fabric is sewn inside the garment but is not bonded to the GORE-TEX® membrane.
GORE-TEX®, GORE® and designs are trademarks of W.L. Gore & Associates.