Chair by Ron Arad. Metal is a popular material used in informalist design as it is raw and industrial. This particular design's shape should be noted as its shape is very loose and free-flowing, not upright and measured.
This product, the Braced Shelf, is designed by Wolfgang Laubersheimer (the founded of the group Pentagon). It is made out of steel and braided steel wire. This is a unique bookshelf as it leans towards the side unlike the normal bookshelves.
The Kangaroo Chair is made out of a thick aluminium sheet. Due to it being simple and made out of aluminium, it shows that it is not high-tech, therefore being post industrial. The Kangaroo chair, however, does not look very comfortable.