This is a 45RPM work cap. It's a popular, classic hat. ▶︎About 45rpm.& In 1986, "NORTH MARINE DRIVE" was launched, evolving from "45rpm BOYS." In 2000, "45rpm" and "NORTH MARINE DRIVE" were integrated into a new line, 45rpm.& This is a rare item from over 20 years ago. Although it's vintage, there's no significant damage, and it's in beautiful condition with no stains on the inside. Color: Navy Marked size: 1 Inner circumference: Approximately 57cm Brim: Approximately 5.5cm Other recommended items are listed in #イブキのクローゼット. 45R Hat