Weep-Armor™ is made of polyester strands for life of the wall performance of keeping the weep vents protected. The purpose of the product is to keep mortar droppings, dirt and debris from clogging the weep vents, while providing a path for water to reach the weep vents. Weep-Armor™ eliminates the worry of mortar bridging, insect infestation through the weeps and it promotes air flow in the cavity wall.