What name is given to denim with a contrasting woven edge visible along the outseam?

Denim with a contrasting woven edge visible along the outseam is called selvedge denim.

The term refers to the self-finished edge created when fabric is woven on a traditional shuttle loom. The edge prevents the cloth from unraveling and can include a distinctive colored line, often red.

Selvedge denim became associated with older American mills and later with Japanese denim production. Many enthusiasts display the edge by cuffing their jeans, although the visible line itself does not determine the fabric’s weight or quality.

Selvedge is often confused with raw denim. Selvedge describes how the fabric edge is woven; raw describes denim that has not been washed or otherwise factory-aged. A pair of jeans can be both selvedge and raw, but the terms mean different things.