👉 Jag jeans are a popular casual denim style often worn by young adults, characterized by straight legs with a relaxed fit. They're designed for comfort and functionality in both the office or casual wear situations. The word "jag" refers to "fastening" or "making fast," akin to using a buttonhole on pants. This term is often used in relation to jeans because of their ability to be adjusted quickly and snugly, much like buttons are used for fastening.