Jeans are trousers made from denim. Mainly designed for work, they became popular among teenagers starting in the 1950s. Historic brands include Levi's and Wrangler. Today, jeans are a very popular form of casual dress around the world and come in many styles and colors, with the "blue jeans" particularly identified with the American culture, especially the American Old West. Americans spent more than $14 billion on jeans in 2004. In 1895 you could buy jeans for $1.50. Today, some jeans cost $200 to $500 with limited-edition and collectibles costing up to $2000.

History

Jeans fabric was made in Chieri, a town near Turin (Italy), in the 1600s. It was sold through the harbour of Genoa, which was the capital of an independent republic, and a naval power. The first were made for the Genoese Navy because it required all-purpose pants for its sailors that could be worn wet or dry, and whose legs could easily be rolled up to wear while swabbing the deck. These jeans would be laundered by dragging them in large mesh nets behind the ship, and the sea water would bleach them white. According to many people the jeans name comes from bleu de Gênes, i.e., blue of GenoaFact: date=August 2008. The raw material originally came from the city of Nîmes (France) Serge de Nîmes i.e. denim.

Riveted jeans

Blue jeans

As imported American products, jeans were somewhat expensive, especially in the case of the Soviet Union which restricted hard currency imports. In Spain they are known as vaqueros or "cowboys," in Danish cowboybukser meaning "cowboy pants" and in Chinese niuzaiku (SC: 牛仔裤), literally, "cowboy pants" (trousers), indicating their association with the American West, cowboy culture, and outdoors work. Similarly, the Hungarian name for jeans is "farmernadrág", meaning "farmer-trousers".

Jeans can be worn very loose in a manner that completely conceals the shape of the wearer's lower body, or they can be snugly fitting and accentuate the body. Historic photographs indicate that in the decades before they became a staple of fashion, jeans generally fit quite loosely, much like a pair of bib overalls without the bib. Indeed, until 1960, Levi Strauss denominated its flagship product "waist overalls" rather than "jeans".

Blue jean insulation

Recycled blue jean is becoming a popular insulation material (sometimes called Cotton Batt insulation) used in the construction of houses. Due to its low relative synthetic chemical composition and because it is made of recycled materials, it is gaining prominence in green building circles. Like conventional insulation, it moderates heat transfer and reduces sound transfer between floors or rooms. Blue Jean insulation has an R-Value of 13 to 19 (for 3.5 and 5.5 inch batts, respectively) making it a preferable insulator to typical fiberglass batts even without taking into account the environmental considerations.