A combination of Nomex, basalt, amorphous silica, and aluminized silica joined together with Kevlar and stainless steel thread to create the full auto rated Liberty's Defense staightJacket Thermal Attenuator, which provides absolute flame resistance and heat mitigation for direct and continuous contact with your silencer's extreme continuous temperatures up to 2,000°F and short excursions of 3,000°F. Due to an overwhelming surge of orders our current lead time is approximately three to four weeks.