Top 3 Must-Have Short-Sleeve Picks

Three collared shirts in blue and white neatly arranged on a table.

What to Wear for Cool Biz This Year?

*Cool Biz is a uniquely Japanese term that refers to a summer office dress code designed to keep employees cool and professional in hot weather.

Japan’s summer is hot and humid—and with the growing emphasis on Cool Biz, short-sleeve shirts have become a must-have item. Their simple design means that small details can make a big difference. The key is finding a way to maintain a clean, professional look while adding a touch of sophistication. Here are three essential short-sleeve shirts that prove less is more when it comes to Cool Biz style.

Short Sleeve Dress Shirts

Our classic short-sleeve dress shirts are crafted from carefully selected fabrics that offer refreshing comfort and easy care—ideal for business professionals.
Just like our long-sleeve shirts, we make no compromises in craftsmanship, using techniques such as rolled hems and flat-felled seams.

To help prevent sweat stains, we've designed the shoulders and sleeves with extra room, creating a naturally sleek silhouette.

Perfect for Cool Biz styling, we recommend pairing them with wool-blend slacks.

Light blue short-sleeve button-up shirt laid flat on a white background.
A close-up of a blue striped shirt pocket.
Close-up of a striped blue dress shirt collar and hem.

Polo Shirts

Polo shirts are poised to become the new staple of office casual wear. They strike the perfect balance—less casual than a T-shirt, yet more relaxed than a dress shirt, delivering a look that's effortlessly refined.That said, there’s no need to go overboard with styling.

Try pairing a polo shirt with a muted-tone jacket to subtly brighten up your outfit.
It’s that unique smart-casual charm of the polo—not quite a T-shirt, not quite a dress shirt—that truly shines through in sophisticated color combinations.

Navy blue polo shirt laid flat on a light background.
Close-up of a navy blue polo shirt sleeve.

Stretch Shirts

These short-sleeve stretch shirts are made from ultra-high gauge knit fabric, offering a polished look with excellent mobility. They’re wrinkle-resistant, breathable, and even washable at home, making them incredibly easy to care for.

The perfect balance of “dressy appearance” and “everyday practicality” is what makes these shirts so reliable.
This collection was designed to meet that very ideal.

 

Light blue short-sleeved button-up shirt laid flat on a white background.
Light blue fabric with a simple pocket design.
Light blue fabric with a wavy edge on a white background.