Chimp1968

Hi. I'm in process of purchasing a used galaxy. Looks very tidy interior and exterior but under bonnet the gear box is wrapped in a kind of charcoal grey padded jacket. Having looked at pictures of the engine on the net I haven't found one that looks the same. What could this be and is it a normal part of the engine design? Apologies if there is a blindingly obvious answer to this question!! Any advice appreciated.