ISETAN MEN'S started as an original brand of the Isetan Shinjuku Store, Men's Building . What is the reason behind its overwhelming popularity among businessmen, despite being a private brand?
We delve into why ISETAN MEN'S items, which blend seamlessly with any outfit and provide a quiet sense of satisfaction every time you wear them, are chosen as the "optimal solution" for business wear.

Two reasons why ISETAN MEN'S is popular among businessmen

[Reason 1] We collaborate with renowned factories to achieve high cost performance.

When comparing ISETAN MEN'S to other brands, what stands out most is its exceptional cost performance. Suits are priced in the low 100,000 yen range, and Italian-made shirts are in the 20,000 yen range. This high cost performance, despite being a retailer, is achieved because they handle everything from planning to production, collaborating with renowned factories to pursue meticulous craftsmanship.


For example, a prime example of ISETAN MEN'S craftsmanship is their suits. They are made in collaboration with Towa Plum, a long-established factory in Hanamaki that, in 1977, was the first in Japan to invite the renowned Italian patternmaker Oberdan Costanzo to acquire tailoring techniques.

Furthermore, the fabric was commissioned to be woven by Yamaei Woolen Mills, which has a factory in Bishu, one of the world's three major wool textile producing regions, alongside Huddersfield in England and Biella in Italy, and is considered the birthplace of wool textiles in Japan.


ISETAN MEN'S is committed to quality craftsmanship, even in essential business accessories such as belts and socks. Belts feature hand-sewn areas around the loops, and the edges are finished to ensure a smooth feel without any leather seams on the inside. Furthermore, socks are repeatedly refined to prevent them from slipping down.

[Reason 2] Because it's the "optimal solution" for business items that reflect the voices of those who "want" them.

Another concept behind ISETAN MEN'S product development is "to capture and give shape to what our customers want." The buyers at ISETAN MEN'S stores gather feedback from customers they hear in-store every day, and in order to address these real-world concerns, they pursue and plan truly comfortable business items.

Scarves, which are in high demand even in spring, are a key item for this season for Izumi, the buyer of shirts, ties, and seasonal accessories on the 5th floor Isetan Shinjuku Store, Men's Building . To meet the demand for a versatile scarf that can be used in three seasons other than summer, the fabric was selected with three points in mind: thin, warm, and soft to the touch. By using an Italian fabric that is a blend of rayon and cashmere, both durability and an elegant touch are achieved.

Furthermore, buyer Izumi focused on "casual linen shirts" to meet the demand for shirts that can be worn in cool biz, business settings, and even casual styles. They adopted a one-piece collar that is easy to wear without a tie, and set the length so that it can be worn untucked. The result is a shirt that is easy to wear in the Japanese summer.


Inaba, the men's tailored clothing buyer on the 5th floor Isetan Shinjuku Store, Men's Building , has meticulously redesigned the tailoring to suit the Japanese physique. The shoulders are curved forward, and the lower part of the armhole, known as the "sickle," is set higher. By designing the sickle higher, the body of the jacket is less likely to be pulled when moving the arms, resulting in a comfortable and light fit that allows for easy movement.



In this way, ISETAN MEN'S buyers travel the world to understand customer needs and deliver the best products in the best possible form, from materials and accessories to patterns and factories. This meticulous "storytelling" of craftsmanship, which is carried out consistently from planning to production, is the reason why ISETAN MEN'S is chosen.

ISETAN MEN'S latest must-have items, updated and refined.

ISETAN MEN'S Spring/Summer 2025 collection offers an even wider variety of items. From suits to accessories, we introduce some noteworthy items from our confident collection that will fulfill every businessman's desires.

View all ISETAN MEN'S ties

These Italian-made silk ties, crafted with Italian fabric and stitching, now feature an expanded range of patterns. The lineup includes everything from basic stripes to sophisticated small patterns. Another distinctive feature is the bottleneck shape, which narrows in the center for a beautifully tied knot.



The suits and jackets, with their slightly wider lapels, exude a calm, classic feel and are designed to be easy for anyone to wear, regardless of age, thanks to their balanced aesthetic. The gorge line, where the upper collar and lapel meet, is set slightly higher, adding a modern touch.




Both the dress shirts and casual shirts are produced in an Italian factory. They are tailored to fit the Japanese physique, with a curved shoulder line. The casual shirts are designed so that the collar opens beautifully when the top button is unbuttoned. The dress shirts feature smooth cotton fabric and meticulous stitching to create a dressy feel.

View all ISETAN MEN'S dress shirts and casual shirts.


This stole was designed to be usable in three seasons other than summer. It's made from a blend of smooth rayon and cashmere, with a focus on three key features: a pleasant feel against the skin, ease of wrapping due to its lightweight nature, and warmth. The chic solid colors also make it easy to match with any outfit.



These socks were redesigned in 2024. They use high-quality extra-long staple cotton (Egyptian cotton) yarn, which undergoes gas-burning to reduce pilling and mercerization to enhance its luster, creating a dressy look suitable for business. Through collaboration with the factory, they've achieved a more fitted silhouette that's less likely to slip down.
These cordovan belts, crafted in a workshop in Asakusa, boast a beautiful, lustrous finish. The overall curved design ensures a comfortable, stress-free fit that conforms to the body when worn.