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What is KAITEKIKOUBOU?
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The story behind its creation
It all started with the passionate desire of an elementary school teacher who saw the children of a silkworm farm sleeping during class because they were tired. A thin thread made by a small company. A big, bold dream that doesn't match that thin thread.
The thread of our hearts has never broken, no matter what difficulties we face, and we have been weaving our thoughts together with sincerity for approximately 120 years.
The underwear brand "KAITEKIKOUBOU" was born, condensing Gunze's DNA and forming the basis of all of our products. -
Manufacturing Commitment
Our passion for comfort has not changed one bit since our founding and lives on in the "KAITEKIKOUBOU."
The fabric is made with as little stress as possible, and is gentle to the skin, enveloping it securely. The tags that come into direct contact with the skin are also printed, making them even smoother to the touch.
Every single stitch is carefully crafted to provide an unprecedented level of comfort. -
The secret of quality
"KAITEKIKOUBOU" is underwear that pursues "comfort" and "cleanliness" and is the culmination of Gunze's efforts as a long-established underwear manufacturer.
It is comfortable to wear and does not put stress on the skin, and the antibacterial and deodorant treatment improves the feeling of cleanliness while maintaining the softness of the fabric.
To gently and tenderly embrace the wishes of all our customers who wish to live each day in high quality and comfort.
*100% cotton body series
Reasons for comfort
1. Comfort Science Lab

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From the perspective of physiological anthropology and ergonomics
Pursuing the ideal underwearUnderwear is said to be the second skin.
The Gunze Comfort Science Lab is an Underwear Physiology Research Institute established to pursue the ideal undergarment and to scientifically research a better relationship between undergarments and the human body so that people can feel comfortable both physically and mentally.
By measuring physiological data (physiological values) from multiple perspectives, including physiological anthropology, psychology, and ergonomics, and then scientifically verifying it, we are able to develop products that are comfortable to wear and do not put a strain on the body.
Furthermore, we utilize the know-how of each division of Gunze, such as planning, production, and sales, to develop products that can meet all needs.
2. Three-dimensional design

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Gunze's unique three-dimensional design based on the science of body shape
Gently envelops you, creating an exquisite fitKAITEKIKOUBOU has been highly praised by customers for its comfort.
This comes from Gunze's unique three-dimensional design technology.
By designing the garment three-dimensionally based on the actual shape of the human body, from the knitting and cutting stages onwards, the feeling of tightness (pressure) felt when wearing the garment is greatly reduced.
It is gentle on the body and fits smoothly, creating a comfortable fit that only KAITEKIKOUBOU can provide.
In order to minimize any discomfort to the skin when worn, the side seams between the body parts, which can be a nuisance when touching the skin, have been eliminated.This is a gentle design made possible by the three-dimensional design.
The gentle comfort of cotton is pleasant,
100% cotton body series
Features of the 100% cotton series
Product line-up
Short sleeve shirts, running shirts, long sleeve shirts*Sizes may vary depending on color.
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Product name Long sleeves U-neck Part number KQ3010 price size S・M・L・LL・3L・4L Click here for details
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Product name Short sleeves U-neck Part number KQ5016 price size S・M・L・LL・3L・4L Click here for details
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Product name Short sleeve buttoned shirt Part number KQ5006 price size M・L・LL Click here for details
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Product name Running Part number KQ5020 price size S・M・L・LL・3L・4L Click here for details
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Product name Short sleeves, crew neck Part number KQ5014 price size S・M・L・LL・3L・4L Click here for details
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Product name Short sleeve V neck Part number KQ5015 price size S・M・L・LL・3L・4L Click here for details
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Product name Long sleeves, crew neck Part number KQ3008 price size S・M・L・LL・3L・4L Click here for details
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Product name Short sleeve buttoned front shirt Part number KQ5018 price size M・L・LL Click here for details
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Product name 8/10 Sleeve U-neck Part number KQ3810 price size M・L・LL Click here for details
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Product name Long sleeve front buttoned shirt Part number KQ2518A price size M・L・LL Click here for details
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Product name Long sleeve buttoned shirt Part number KQ25128 price size M・L Click here for details
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Product name 長袖U首(袖丈長め) Part number KQ3012 price size M・L・LL Click here for details
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Product name Short sleeves, crew neck Part number KQA113 price size M・L・LL Click here for details
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Product name Short sleeve V neck Part number KQA115 price size M・L・LL Click here for details
Underpants/Briefs*Sizes may vary depending on color.
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Product name Shorts (front opening) Part number KQ5007 price size S・M・L・LL・3L・4L Click here for details
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Product name 8/10th length underpants (front opening) Part number KQ3802 price size M・L・LL Click here for details
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Product name Long pants (front opening) Part number KQ3002 price size S・M・L・LL・3L・4L Click here for details
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Product name Long pants (front opening) Part number KQ25029 price size M・L・LL Click here for details
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Product name Span briefs (front opening) Part number KQ5032 price size S・M・L・LL・3L・4L Click here for details
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Product name Tenhiki Briefs (Front Opening) Part number KQ5031 price size S・M・L・LL・3L・4L Click here for details
Sarumata Boxer Shorts/Trunks
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Product name Monkey and mouse (front cover) Part number KQ5026 price size S・M・L・LL・3L・4L Click here for details
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Product name Trunks (front opening) Part number KQ5028 price size S・M・L・LL・3L・4L Click here for details
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Product name Fit boxer (front opening) Part number KQ5093 price size S・M・L・LL・3L・4L Click here for details
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Product name [Soft elastic waistband] Boxer shorts (front opening) Part number KQ5180 price size M・L・LL Click here for details
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Product name [Stretch cotton] Boxer shorts (front opening) Part number KQ5181 price size M・L・LL Click here for details
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Product name Soft Trunks (Front Opening) Part number KQ2092 price size M・L・LL・3L Click here for details
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Product name Monkey and mouse (front cover) Part number KQ2126 price size M・L・LL Click here for details
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Product name Monkey and cat (front opening) Part number KQ2026 price size M・L・LL Click here for details
Woven pants/long pants
さらりとした肌ざわりが特長の
涼感シリーズ
涼感シリーズの特長
強撚綿を使用し、さらりとした肌ざわりが特長。
生地の清涼感とハリ感が独特のさわり心地を実現。
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涼風綿スズカゼメン(編み物)
涼やかなシャリ感が魅力の涼感インナー。ソフトで薄く風通しのある素材です。クレープに比べて伸縮性があります。
The item is here
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クレープ(織り物)
汗ばんでもサラッと快適なクレープ。生地の清涼感とハリ感が評判の夏肌着。涼風綿に比べ、ハリ感が強めです。
The item is here
Product line-up
涼風綿スズカゼメン
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Product name Short sleeves, crew neck Part number KQ6414 price size M・L・LL Click here for details
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Product name Short sleeves U-neck Part number KQ6416 price size M・L・LL Click here for details
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Product name Running Part number KQ6420 price size M・L・LL Click here for details
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Product name Shorts (front opening) Part number KQ6407 price size M・L・LL Click here for details
Crepe
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Product name 全開シャツ Part number KQ6506 price size M・L・LL Click here for details
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Product name Short sleeves U-neck Part number KQ6516 price size M・L・LL・3L Click here for details
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Product name Running Part number KQ6520 price size M・L・LL Click here for details
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Product name Shorts (front opening) Part number KQ6507A price size M・L・LL Click here for details
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Product name トランクス(前とじ) Part number KQ6590 price size M・L・LL Click here for details