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2025.05.27
RESEARCH

Over 3 Million "4S Shirts" Sold by Suit Select: The Japanese Technology Behind "Non-Iron" Clothing

#4S Shirt
#Non-Iron Shirt
#Suit Select
#Business Wear
#Konaka
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In today’s business wear, comfort is a must-have feature.
And comfort isn’t just about how clothing feels—easy care matters, too. Take, for example, no-iron shirts that require zero ironing.
In this fiercely competitive market, where major suit brands are constantly vying for the top spot, Suit Select’s 4S Shirt stands out for its exceptional quality.
First launched in 2017, the 4S Shirt has now surpassed a cumulative total of 3 million units sold. But what truly sets it apart from competitors? We interviewed the product manager involved in its development to find out everything.
PROFILE
Shota Ueno
Shota Ueno

KONAKA CO., LTD.
Merchandising Division Buyer, Deputy Manager

What Are the Four "S"s that Win the Hearts of Modern Businesspeople?

Can you start by telling us about the Suit Select brand?
Supervised by creative director Kashiwa Sato, Konaka Co., Ltd.’s suit brand.
Currently, we have 180 stores across Japan, offering a wide variety of products—mainly suits, but also shirts, ties, and everything from formal to casual wear.
"4S Wide Collar Dress Shirt," 4,290 yen (tax included)
"4S Wide Collar Dress Shirt," 4,290 yen (tax included)
What kind of shirt is the explosively popular 4S Shirt?
It’s a business shirt that debuted in February 2017.
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