Developed with FZN, a manufacturer specializing in fan-equipped clothing, the shirt borrows technology that has traditionally been associated with construction workers and outdoor field crews. Its goal is more subtle: keeping office workers comfortable without replacing conventional business attire with a visibly technical garment.

Two 95-gram cooling fans are positioned on the sides at the back rather than directly behind the wearer. The arrangement creates a slight bulge in the shirt but is intended to make sitting more comfortable. During operation, the fans draw air into the garment and circulate it around the body, helping sweat evaporate and reducing the buildup of heat inside the shirt.

The cooling system offers three airflow levels. At the highest setting, it delivers approximately 53 liters of air per second and provides around 3.5 hours of operation. The medium setting extends runtime to approximately five hours, while the lowest setting can continue for up to 10 hours on a single charge.

Power comes from a removable 165-gram rechargeable battery pack. The complete system includes the polyester shirt, two fans, connecting cables and the battery unit. Once the electronic components are removed, the shirt can be machine-washed, an important consideration for an item intended for frequent summer use.

The short-sleeved shirt is offered in medium, large and extra-large sizes, with navy blue and charcoal gray finishes. Its design includes front snap buttons, an open left chest pocket, side slash pockets and a hem drawcord designed to help retain circulating air.

Rather than treating cooling technology as something reserved for specialized workwear, the Kuchofuku shirt places it within a conventional business silhouette. The result is a practical example of how wearable technology can address an increasingly everyday problem without radically changing how people dress for work.

According to the Internet