They are made with fiberglass and high quality flexible resin so that they are very durable and flexible. The consensus I have observed is that the most common cause for the stock flares to fail is the internal fastening tabs breaking off. These flares use fastening hardware through the pockets to mount securely and will not separate due to broken tabs.
IF a flare is damaged it may be repairable (broken tabs on the stock flares are not repairable) or a one off replacement flare may be obtained. The flares include Torx hardware, gaskets, and they are primered flat black.
$560 for full set with or without 93-97 mud flap attachment points including trim gaskets and hardware.