Durable good

Items like bricks could be considered perfectly durable goods because they should theoretically never wear out.

This can be exemplified from the fact that personal expenditures on durables exceeded the total value of $800 billion in 2000.

According to Cooper (1994, p5)[4] "durability is the ability of a product to perform its required function over a lengthy period under normal conditions of use without excessive expenditure on maintenance or repair".

Several units may be used to measure the durability of a product according to its field of application such as years of existence, hours of use and operational cycles.

Durability, as a characteristic relating to the quality of goods that can be demanded by consumers, was not clear until an amendment of the law in 1994[which?]