The key to a stylish spring/summer outfit is a casual shirt! [Mitsukoshi Isetan Online Store]
![The key to a stylish spring/summer outfit is a casual shirt! [Mitsukoshi Isetan Online Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/max-width/810/images/upload/2026/04/fc175dee9f09cbf781ef84bde6b6f556.jpg)
This article introduces recommended men's casual shirts for 2026, categorized by color, pattern, and material. Casual shirts are versatile and useful, working well as a light jacket for weekend outfits or as an inner layer for business attire. They also make a great and stylish gift for men.
With the weather getting warmer, it's time to incorporate a cool, casual shirt into your wardrobe. Its versatility also makes it a great gift. For your 2026 casual shirt selection, be sure to check out this website.
ISETAN MEN'S net Editorial DepartmentProduction by STUDIO ALTA
＊The information in this article is current as of the time of publication. Product information may be revised or changed without notice.
![Mitsukoshi Isetan Men's Clearance Sale 2026: We've gathered the best deals! [Mitsukoshi Isetan Online Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/empty.png)
![[Autumn/Winter 2026] 6 Autumn/Winter Outerwear & Blousons to Choose From Isetan Shinjuku Store, Men's Building | "Kuchiina Channel" GUIDE by ISETAN MITSUKOSHI](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/10/e8c9f130b35eeea8433d2a6d79ae53d8.jpg)
![[Feature] Unveiling at the festival honoring the patron saint of "leather"! 12 top leather shoe brands selected ISETAN MEN'S | Saint Crispin's Week 2026 [Isetan Shinjuku Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/09/0aed505e5dea1dfcb73762f0181e999c.jpg)
![Recommended for 2026! Latest Men's Down Jackets and Down Coats [Mitsukoshi Isetan Online Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/10/b8f317c1f793c00235d3ad01e28f4a68.jpg)
![To commemorate the 40th anniversary of LAB SERIES brand and Daisuke Takahashi turning 40, a special holiday box has been released. A talk show campaign is also underway! [Isetan Shinjuku Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/10/ec51d2b713894c28384584760ce78bf9.jpg)
![Top 6 Recommended Popular Men's Knitwear and Sweater Brands for Fall/Winter 2026! [Mitsukoshi Isetan Online Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/10/dba137054a917fa195917b1aebbc0335.jpg)
![ALDEN | A trunk show where you can find your perfect pair from a wide variety of options. [Isetan Shinjuku Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/10/43b44d9b10195517818a3a4696d814f6.jpg)
![[Series] A peek inside the personal belongings of Isetan Men's! Assistant Buyer Keiya Jimbo - Immerse yourself in the story of a beloved item | #IsetanMen'sFavoriteItems](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/10/887c04218e83254296f832c9945c09ec.jpg)
![ASICS SportStyle | New colors added to popular series! Pop-up store featuring exciting new products. [Isetan Shinjuku Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/09/21a6a42bd3b09193006e047f77a67274.jpg)
![[Updated September 28th (Monday)] PLAY COMME des GARÇONS | MARKET PLAY | Isetan Shinjuku Store](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/resize/214x142/images/upload/2026/09/00a0b96c84b31c89d629a795519bae27.jpg)
![OUAT 's theme for this season is "-014- META ALTERNATIVE". A limited-time pop-up store will be held! [Isetan Shinjuku Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/width/214/images/upload/2026/10/bc9359a3fa421f501bc8c12ff40401e6.jpg)
![Introducing representative items from Tae Ashida's men's line, "Tae Ashida Men's"! [Isetan Shinjuku Store]](https://ug7rtk3vglg3.global.ssl.fastly.net/images/thumbnail/width/214/images/upload/2026/10/35f933ab90ffc69f83ae4377d6a31628.jpg)
