exhaust sound absorbent

[Juan_Mk4]

Hi all

Just recently there was a weird metallic fibre coming out of my exhaust, I believe is the exhaust sound absorbent.. Does anyone know about these things??
do I need to change the exhaust??

Any advice will be grate

Juan

[NOZ]

If its like long strands of hair coming out then its defo the baffle from the exhaust.