Exhaust insulation lagging wrap is a type of insulation material that is commonly used in exhaust systems. It is typically made of heat-resistant materials such as fiberglass, ceramic, or basalt fibers, which are designed to withstand high temperatures and harsh conditions. 

The insulation wrap is wrapped around the exhaust pipe or muffler to reduce the amount of heat that is transferred to surrounding areas. This can help to improve safety and protect nearby components from heat damage. 

Additionally, exhaust insulation lagging wrap can help to reduce the temperature of exhaust gases before they are released into the environment, which can help to reduce the risk of fire and improve environmental safety. Some exhaust insulation lagging wrap products may also include additional features such as acoustic insulation or a reflective surface to improve heat retention.