This is a heavy-duty full set of workwear from Jichodo, a leading manufacturer with a top share in the Japanese workwear industry. It includes a long-sleeved shirt, a multi-functional work vest, and pants. The design pursues practicality in the field to the extreme, with features incorporated throughout. The long-sleeved shirt is equipped with a pen slot on the upper left arm, essential for handling blueprints and notes. The chest pocket has a sub-pocket with a zipper to prevent the loss of valuables and supports strenuous movements. Metal snap buttons are used for fastening the front and cuffs, allowing for easy attachment and detachment even when wearing gloves. The Jichodo logo is engraved on each of these dot buttons, showcasing attention to detail and quality. The material is a tough fabric, either durable cotton twill or a polyester blend, and areas subject to intense friction and stress are reinforced with double stitching, using two threads. This item is a used product that has been worn for a long time in actual work environments. There are clear signs of accumulated sebum stains, scuffs from dust at the worksite, and oil stains from work on the collar, cuffs, and back. The edges of the fabric show unique wear marks, presenting a very realistic condition that conveys its history as a tool that has been thoroughly used. Due to its rare large size of 4L, it is suitable not only for larger individuals but also as an outer layer for protection in winter, worn over thick innerwear or sweaters. It is ideal for DIY, gardening, car washing, camping, or for those seeking the authentic texture of vintage workwear. This set combines the durability of a major manufacturer with the rugged texture that can only be achieved through extensive use.