It is an elastic duct made of aluminium foil and some metallic rings. The crumpled texture offers the flexibility for bending. Therefore, this kind of ducts is usually used as a gas pipe.

The color of the foil and metal rings can be changed by the Substance SBSAR file.

This shiny silver texture is a typical material for making padded coats and jackets. The material is sewn into diamonds producing padded patterns. Each diamond pocket has some cotton inside. This ensure inner cotton is always evenly distributed.

There are also wrinkles, stitches, dirt and folds on the surface.

Obviously, it is an aluminum foil with a lot of wrinkles. It keeps the high reflectivity of aluminum though it is highly crumpled.