The small pocket commonly found on jeans, often considered useless today, has a surprisingly practical history. Originating with Levi Strauss’s original “waist overalls” in the late 19th century, the pocket wasn’t intended for modern items like phone cases or lighters. Business Insider reports the pocket was designed for cowboys and laborers to securely store pocket watches. These watches were essential tools for railway workers and others needing to keep precise time. The small size prevented the watch from falling out during physical activity. While pocket watches are largely obsolete, the pocket remains a consistent feature of jeans design, a vestige of their workwear origins. It serves as a reminder of the functional purpose behind the iconic garment.