"Kuchiina Channel," a new series currently airing on Mitsukoshi Isetan's official video channel "GUIDE by ISETAN MITSUKOSHI," features Inaba, a buyer for Isetan Shinjuku Isetan Shinjuku Store, Men's Building and Kucchi, a category specialist, introducing beloved classic items to convey the charm of Isetan Shinjuku Store, Men's Building .

In the second episode, we'll focus on suits, a subject that truly showcases the duo's expertise, and introduce six exceptional navy suits from Isetan Shinjuku Store, Men's Building . We'll delve into the characteristics of each brand, the differences in comfort, and styling tips in a lively and engaging conversation.

Two people who know Isetan Shinjuku Store, Men's Building inside and out, appear and choose the navy suits they selected.

Isetan's Top 6 Classic and Reliable Navy Suits

1. Belvest "70305"

Italy's leading "pinnacle of machine-made"

Kucchi: Belvest is a brand based in Northern Italy and is known as the "pinnacle of machine-made clothing." The "70305" model has a classic, quintessential form, characterized by its lightness and elegant appearance achieved by minimizing the use of auxiliary materials. Made of wool serge that can be worn year-round, it is popular with customers who want to look neat and tidy when wearing a tie.

Inaba: With thin shoulder pads and precise interlining, it achieves both a soft feel and a clean silhouette. It has a classic style with a touch of Italian flair.


Kucchi: When you actually wear it, it's really light and easy to move in, but the stiffening at the front prevents it from looking sloppy. The shoulders drape softly, so it doesn't feel restrictive, and it makes you look elegant when standing. The fabric has a refined feel and elevates your business attire. It gives you a sense of security when using it for work.

2. Alfonso Sirica "Violina"

Neapolitan craftsmanship × precision, flexibility and range of motion

Kucchi: My favorite brand is Alfonso Sirica, a tailor from Naples in Southern Italy. Naples suits are characterized by their soft feel due to the amount of handwork involved, but Alfonso Sirica is a rare tailor that combines that Neapolitan style with the precision of creating patterns using CAD. With a high armhole, a manica camicia (shoulder with sleeve cut), and wide sleeves, it achieves both a powerful look and ease of movement.

Inaba: Normally, Neapolitan tailors draw chalk marks on the fabric by hand before cutting, but this brand uses CAD for ready-made garments. That's why they can achieve precise tailoring with minimal errors while retaining the feel of handcrafted work. The armholes are small and the garments are designed to fit the Japanese physique, fitting snugly around the shoulders.


Kucchi: The shoulder area has the most Neapolitan feel, with the armholes set high, creating a sense of tension as it rises, while the slightly wide sleeves give it a powerful and classic impression.

3.Timothy Everest London “E9”

A balance of classic and lighthearted. Evolved modern British style.

Kucchi: This brand is supervised by a tailor from Savile Row and tailored in Japan. British suits are characterized by their structured, armor-like construction, but Timothy Everest 's E9 retains that classic feel while also possessing a lightness. The concave shoulders and interlining are distinctly British.

Inaba: It's often chosen as a first garment, and the ability to choose the pattern and fabric through pattern ordering is also appealing. The high waistline creates a taut silhouette that hugs the sides. It looks neat and refined, yet it's lightweight and comfortable to wear for long periods.


Kucchi: The shoulder area has a nice three-dimensional shape, and the high waistline makes you look stylish. Wearing it as a three-piece suit enhances the classic mood.

4. Brooks Brothers "No.1 Sack Suit"

The epitome of American traditional style

Kucchi: Brooks Brothers is a leading American brand. American suits are characterized by their natural shoulders, minimal waist tapering, and overall relaxed fit. Brooks Brothers ' USA-made "No. 1 Sack" suit is a perfect example of this. Natural shoulders, a sack style without darts, and a center hook vent are its defining features.


Inaba: Regarding the sewing, the garments are made in a factory in the United States that performs high-grade sewing, and the fabric is wool from American Woolen Company, which also supplies fabric to the U.S. Navy, resulting in a garment that is firm, resilient, and extremely durable.
The two buttons on the sleeves, set apart from each other, are a distinctly American detail. The silhouette is clearly different from that of Italy or Britain.


Kucchi: The silhouette of the shoulders and the balance of the waist are different from those of Italy or Britain. The two buttons on the sleeves are also a detail that is typical of America.

Inaba: While a classic American style with a button-down shirt and regimental tie is great, I also recommend mixing and matching items with various other styles .

5. ISETAN MEN'S Original Suit

A modern model that blends the best aspects of various countries.

Kucchi: This suit is a collaboration between Mitsukoshi Isetan, from factory and fabric development onwards. It's a "best of both worlds" approach that's only possible because it's original. It blends Italian softness with British structure, making it suitable for a wide range of modern lifestyles, and is recommended for those who don't want to be bound by "brand molds."

Inaba: The sewing is done by Towa Plum in Iwate Prefecture. Their strength lies in their technique of sewing structured garments even with thin interlining. The gorge is high and the lapels are wide, resulting in a high armhole but not overly narrow arms. The trousers are single-pleat tapered with ample room in the thighs.


Kucchi: It suits any body type and has a trendy balance. It's easy to pair with knits or thin sweatshirts underneath.

Inaba: Katsuri Woolen Mills' "Gently Cloth" is a fabric developed based on customer feedback. It features the strength of wool and a cashmere-like touch. It's a functional material that we use every season for Isetan Men's suits.

6. TAGLIATORE "Dakar"

Lightweight and relaxed fit expands your styling options.

Kucchi: Lastly, a bit of a bonus. TAGLIATORE 's Dakar is an ultra-lightweight model with minimal interlining and padding. It has no lining and a narrow facing, so you can wear it like a light jacket.

Inaba: The pants have an elastic waistband and drawstring, and the drawstring can be stored inside. You can choose to wear a belt or not.
The material is REDA ACTIVE, a functional wool from Italy. It maintains the look and feel of wool while offering high stretch for comfort. It's a thin and lightweight construction, the complete opposite of traditional full canvas.


Kucchi: It's incredibly lightweight. The way it sways and flows doesn't give off a strong "suit-like" vibe, and it goes well with both dress shoes and sneakers. It can be easily incorporated into today's work style, where the frequency of wearing suits has decreased.
This lineup is only available at Isetan Shinjuku Store, Men's Building . Please come and try on any items that catch your eye in-store!
The six items we've introduced here are all "reliable classics" that you can choose with confidence, as only available at Isetan Shinjuku Store, Men's Building . Belvest 's refined appearance, Alfonso Sirica's softness and precision, Timothy Everest 's modern British style, Brooks Brothers ' quintessential American traditional style, ISETAN MEN'S original fusion design, and TAGLIATORE 's lightness—the ability to compare all of them in-store is a strength of Isetan Shinjuku Store, Men's Building .

When making a purchase, please be sure to tell our category specialist "when and where you will wear it." We will suggest the perfect garment to suit your purpose and how you want to be perceived. If you are interested in any items, please try them on in person at Isetan Shinjuku Store, Men's Building .

[Watch the video]
Isetan buyers and stylists give a detailed explanation of their recommended masterpiece suits! Kuchiina Part 2

*The information in this article is current as of February 13, 2026, the release date of the main video. Product information may be revised or changed without notice.

EDIT: STUDIO ALTA

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