[Feature] 9 Must-Have T-Shirts for Everyday Wear! Introducing Essential Wear Seriously Selected by Isetan Men's | THE T-SHIRT 2025
Isetan Men's offers essential wear featuring timeless designs and high-quality materials. These are timeless pieces that we want to pass down through generations, and we introduce T-shirts that enrich the wearer's mind and body.
Furthermore, "THE T-SHIRT," the annual T-shirt festival held Isetan Shinjuku Store, Men's Building will take place again this year from Wednesday, May 7th to Tuesday, May 27th at Isetan Shinjuku Store, Men's Building 1st floor promotion area.
In this special feature, we'll pick out some noteworthy masterpiece T-shirts from the lineup of brands gathered together during the event under the theme of "New Standards for Adult Everyday Wear," and introduce them from three different perspectives.
*Even after the event ends, the products will continue to be sold Isetan Shinjuku Store, Men's Building B1F, in the underwear, socks, and nightwear sections, with the exception of some brands.
I. "The ultimate modern 'classic' T-shirt aiming for the pinnacle."
Brands that aimed to transform the T-shirt, originally underwear, into a "top worn on its own" are the modern "classic." These shirts are crafted with exceptional skill and a commitment to ultimate quality. We've selected representative signature models from three brands that release these modern "classic" T-shirts.1. SUNSPEL
High-quality everyday wear woven from history and tradition
Founded in Nottingham, England in 1860, SUNSPEL is a prestigious T-shirt brand that continues to uphold the philosophy of its founder, Thomas Hill, and is committed to manufacturing high-quality materials in its own factories within the UK. Using carefully selected premium cottons, including Supima cotton, and techniques cultivated through history and tradition, they have perfected the art of luxurious T-shirts. The "Classic T-shirt," which has been produced since 1908, boasts an exceptional feel and a simple yet sophisticated design, earning it the title of "the perfect T-shirt."
2. Re made in Tokyo Japan
From Tokyo: Pursuing the skills of Japanese craftsmen

Founded in 2007 in Daikanyama, Tokyo, by two designers who honed their skills at a long-established workshop in Tokyo's downtown area, the company pursues creative craftsmanship reminiscent of established European factory brands, while maintaining its commitment to "MADE IN JAPAN" by inheriting the skills of Japanese craftsmen. Instead of the "single jersey knit" typically chosen for T-shirts, they deliberately use "double-sided knitting," resulting in fabrics that are firm, lustrous, and durable. Every design element, such as the sleeve slits that beautifully accentuate the shoulder line, is pursued for comfortable wear.
3. AUXCA. TRUNK
Tailored T-shirts from a long-established brand

AUXCA.TRUNK a brand created by a long-established tailor in Akasaka, Tokyo. They are committed to structured tailoring, much like a suit, and offer T-shirts with a three-dimensional form. Their standard T-shirts use mercerized yarn, made from carefully selected cotton with the surface fuzz removed to enhance its luster. Skilled craftsmen meticulously knit the fabric on a few specialized machines, increasing its density and resulting in a garment that stands out for its superior quality. By employing original patterns based on research into the Japanese physique, the T-shirts can be worn on their own or layered under a jacket for a sophisticated look.
II. "Quality that you want to share with your partner"
Isetan Shinjuku Store, Men's Building offers a wide selection of brands popular with both men and women. Their T-shirts, boasting high quality and versatile designs that appeal to both genders, are timeless classics that transcend gender and age. The comfortable feel and beautiful silhouette are also elements you'll want to share with your partner.4. SLOANE
Size designed to complement knitwear.

Cotton jersey UV T-shirt
Sloane, a well-known knitwear brand, offers a hidden gem: the "Pack T-shirt," available in five unisex sizes. The width isn't too wide, the sleeves aren't too wide, the neckline is slightly high, and the length is designed to be a little longer. This is because the size balance is carefully considered to ensure it peeks out from under Sloane knitwear. The three-dimensional silhouette makes it stylish even when worn alone. The soft texture of the jersey knit fabric and its silky sheen are also appealing. The added UV protection makes it a welcome addition for women as well.
The material is knitted from high-quality extra-long staple cotton using a 60-count double yarn. It has been treated to resist wrinkles and pilling even after washing, allowing it to maintain a clean and neat appearance for a long time. The UV protection function not only protects against sunburn caused by ultraviolet rays that penetrate the fabric, but also prevents white fabrics from yellowing.
5.039LAUNDRY
The ultimate white emanating from high-quality extra-long staple cotton, "American Sea Island Cotton"
This clean and crisp T-shirt from 039LAUNDRY uses "American Sea Island Cotton," which boasts a high degree of whiteness and highlights the delicate, high-quality fibers. The "sinker knit" method, which involves knitting at high speed while applying tension to the yarn, achieves a dry and solid texture. The shirt offers a comfortable, relaxed fit in the body and sleeves, while the sleeve and body lengths are slightly longer, creating a balance between comfort and a beautiful silhouette. The sewing threads and quality label are all made from natural fibers, making this a garment that is kind to both people and the environment.
The material is made from the finest extra-long staple cotton, "American Sea Island Cotton," which is spun using an open-end spinning process to create yarn that is full of air. It is characterized by its fine fibers, natural luster, and soft texture, resulting in a high-quality garment that is both comfortable against the skin and has an elegant appearance.
6. HAAG
The ultimate comfort comes from the stitching and silhouette.
HAAG 's "Crew Neck T-Shirt" features a loose fit. The boxy silhouette, characterized by a natural drape from the shoulders to the sleeves, creates a relaxed look regardless of gender or body type. The back neckline and shoulders utilize a "taco binder finish" to prevent stretching, enhancing durability and comfort around the neck. In addition to a stress-free feel with no seams directly touching the skin, this shirt combines aesthetic appeal with functionality, making it a perfect everyday garment.
The fabric uses a "reversible jersey knit" that stretches horizontally while preventing the twisting and distortion often seen in jersey knits. Made of 100% cotton, the sturdy knit fabric is not see-through, has a soft texture and a beautiful surface, and is also durable enough to withstand washing.
III. "Making the most of the materials elevates the styling to a higher level."
To make a difference in your summer style, choose a T-shirt made from high-quality materials. A T-shirt made from a superior material with a rich texture will make even a single T-shirt look fresh and stylish. Here, we introduce T-shirts that will give you a "next-level" look that sets you apart from the usual, along with outfits that make the most of the material.7. Ameriyas
Wool is a natural, functional fiber. Its unique drape and sheen create an elegant impression.
Ameriyas is a new brand born from the merino wool series of the sock brand "Chictox." By using 100% "Super Extra Fine Merino Wool" from New Zealand, with a thickness of 17.5 microns, they have created an extremely soft, machine-washable T-shirt. The drape and sheen unique to wool knit create an elegant impression. Simply pair it with gray slacks for a cool, clean, and smart casual look. It's a new staple for adults, recommended for summer business casual styles.
Ameriyas Crew Neck T-Shirt ¥19,800 □ Isetan Shinjuku Store, Men's Building Promotion / B1F Underwear
YOAK sneakers ¥39,600 □Isetan Shinjuku Store, Men's Building, B1 Floor, Men's Shoes
@yuki_kuchimoto / @isetanmens_attendant
8. mocT/Mocti
Enjoy sophisticated style with comfortable lyocell material, even in summer.
This crew neck t-shirt with a pocket boasts a silky smooth feel and a natural sheen. Made from 100% lyocell, a regenerated fiber derived from plants such as eucalyptus, it's not only gentle on the skin but also boasts excellent moisture absorption, quick-drying properties, and breathability, ensuring comfortable wear even in summer. The pocket prevents the plain top from looking monotonous, giving it a sophisticated look. To take advantage of the relaxed feel of the material, pair it with wide-leg pants for a relaxed silhouette and create a natural yet effortlessly chic casual look.
mocT T-shirt ¥10,450 □ Isetan Shinjuku Store, Men's Building Promotion / B1F Underwear
@yuki_kuchimoto / @isetanmens_attendant
9. THING FABRICS
A pile T-shirt that lets you fully enjoy a resort feel.
This loose-fitting T-shirt, made from 2mm loop short pile fabric, comes in a wide variety of 12 colors. In addition to its high absorbency, the blend of stretch material provides just the right amount of elasticity for comfortable wear. The asymmetrical hem with side slits subtly covers the waist when paired with shorts, creating a relaxed style. It's perfect for everything from casual outings to resort wear, both indoors and outdoors, offering sophisticated casual style for adults.
THING FABRICS T-shirt ¥13,200 □ Isetan Shinjuku Store, Men's Building 1st Floor Promotion / Basement 1st Floor Underwear
@yuki_kuchimoto / @isetanmens_attendant
Event information starting from Wednesday, May 7th can be found here.
- Event period: Wednesday, May 7th - Tuesday, May 27th
- Venue: Isetan Shinjuku Store, Men's Building 1st Floor Promotion Area / Isetan Shinjuku Store, Men's Building Basement 1st Floor Underwear, Socks, Nightwear
- Brands
RE MADE IN TOKYO JAPAN
Ameriyas
UNDERSON UNDERSON
V::room/Vroom
AUXCA. TRUNK
CAHLUMN
SUNSPEL
THING FABRICS
SNBYA.H/SNBYA.H
SLOANE
039LAUNDRY
HAAG
BARAILLE&GARMENTS
FilMelange
FITFOR
BODHI
MAISON CORNICHON
mocT
LOOK SEA
Text: Yasuyuki Ikeda
*The information in this article is current as of the time of publication. Product information may be revised or changed without notice.
For inquiries, please contact Isetan Shinjuku Store, Men's Building , B1F, Underwear, Nightwear, and Socks. Tel: 03-3352-1111 (Main number)
For inquiries via email, please click here.
