Point Blank Body Armor on Monday agreed to replace 2,000 bullet-resistant vests at an estimated cost of about $1.5 million.

The vests, which contain Zylon, had been the subject of a class-action lawsuit claiming they didn't live up to their warranties.

Point Blank, a subsidiary of DHB Industries of Westbury, NY, said the vests will no longer be offered for sale.

The reliability of Zylon-based vests has been questioned in recent years. The strength of Zylon fibre decreases under high temperature and humidity, according to its manufacturer, Toyobo of Japan.