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BRAIN SLEEP WEAR PERFECT WARM HANTEN

BRAIN SLEEP WEAR PERFECT WARM HANTEN

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Regular price ¥16,500 ¥15,675
Regular price ¥16,500 Sale price ¥16,500
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送料無料

444 in stock

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ギフトラッピングのご希望の方はこちら +

Precautions for use +

● When washing, place in a laundry net and wash separately
● Do not use bleach
● Due to the nature of the fabric, color transfer or fading may occur when wet or through friction with damp items. Do not leave wet
● Due to the nature of the material, pulling the brushed surface strongly may cause fibers to come loose
● Due to the nature of the material, friction may cause shedding or pilling. Use of a lint-removal net during washing is recommended
● Do not tumble dry

Materials +

Composition:
Side fabric
Outer fabric: polyester 100%
Inner fabric: pile portion polyester 100%
Base fabric portion polyester 60% rayon 40%
Filling
Polyester 85% synthetic fiber (acrylate) 15%
Back center intermediate layer polyester 100%

Size +

■ Product size
Free size
Length approx. 76 cm × body width approx. 60 cm × sleeve length approx. 52 cm
Recommended height approx. 153–180 cm
Recommended chest approx. 78–100 cm
Product weight: 0.75 kg
Weight with packaging: 0.8 kg
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Infused with space technology

An ultimate warm Hanten

On the crowdfunding platform Makuake

2070%of funding goal achieved

Exceptionally warm, comfortable, and clean

A revolutionary HantenNow available

Exceptionally warm with spacesuit technology

A proprietary special construction

宇宙服技術で究極に暖かい独自開発の特殊構造

Space technology
3D air heat

An innovative ultra-insulating sheet
that automatically regulates air layers

The sheet itself has insulating properties.
When the temperature drops, it automatically detects the change and expands to create tubular air chambers, enhancing insulation performance.
The video shows the sheet placed on ice.

The sheet itself has insulating properties.
When the temperature drops, it automatically detects the change and expands to create tubular air chambers, enhancing insulation performance.
The video shows the sheet placed on ice.

Proprietary next-generation padding

Multifunctional hybrid fiberfillCarbon Nano Down

Patent No. 7704346

With advanced technology,
delivering ultimate warmth,
along with comfort and cleanliness

羽毛以上に暖かい

Exclusively developed by BRAIN SLEEP over many years, this defect-free hybrid fiberfill incorporates ultra-fine carbon particles processed to an extreme micro size and blended into the fibers through proprietary treatment.
A next-generation multifunctional padding equipped with eight advanced functions, delivering exceptional warmth, comfort, and cleanliness.

FACT

Even in an extreme environment of −17°C

The body maintained a surface temperature of 30.2°C

Does your body suddenly feel cold
after a winter bath or while indoors?

Comfortable sleep depends on proper body temperature regulation before falling asleep

People who take longer to fall asleep tend to spend time before bed in rooms with lower temperatures.
While bedroom temperature during sleep is important, the temperature of the living space before bed also has an impact.

People who take longer to fall asleep tend to spend time before bed in rooms with lower temperatures.
While bedroom temperature during sleep is important, the temperature of the living space before bed also has an impact.

That is why it is important to warm the body before sleep

With rising electricity costs, it is important not to rely solely on heating

The Stanford Method for Ultimate Sound Sleep Method

What matters in sleep is not only time, but quality

About one-third of life is spent sleeping.
When sleep quality is poor, the brain and body do not fully recover, and true performance cannot be brought out.
Because sleep is essential for tomorrow, why not reconsider its quality from the ground up?

身体を暖めて良質な睡眠環境へ導く BRAIN SLEEP WEAR PERFECT WARM HANTEN

TECHNOLOGY

01PERFECT WARM

Ultimate warmth inspired by space technology

An ultimate ultra-insulating sheet that prevents chill in any environment

An ultimate ultra-insulating sheet that prevents chill in any environment

A proprietary insulating material developed from spacesuit technology.
By utilizing highly insulating air layers, insulation performance is further enhanced.
In testing, changes in inner temperature were measured when a cooling spray was applied to the back area.
Without 3D air heat, cold air penetrated to the inside and the temperature continued to drop.
With 3D air heat built in, insulation remained effective and the inner temperature was not affected.

The proprietary insulating sheet senses temperature changes and alters its shape to create multiple air pockets. It is built into the back area, where cold is most easily felt.

A flawless multifunctional hybrid fiberfill delivering ultimate warmth, comfort, and cleanliness

A flawless multifunctional hybrid fiberfill delivering ultimate warmth, comfort, and cleanliness

Exclusively developed by BRAIN SLEEP after extensive research, this flawless hybrid fiberfill incorporates ultra-fine carbon processed to an extreme micro size and embedded into the fibers through proprietary technology.
A next-generation fill designed for multifunctional performance.

Warmer than down

Warmer than down

Developed using down-like fiberfill in varying sizes.
Each fiber interlocks like natural down, trapping warm air efficiently.
Unlike conventional down jackets, no rigid feather materials are used, enabling a soft and comfortable feel.

Learn more about the evidence

149% warmer than down

Delivers far superior insulation compared to premium down materials

Maximum moisture-activated heat generation 290%
Temperature difference 2.5°C

Compared to conventional fiberfill, 290% greater moisture-activated heat generation.
Delivers even, consistent warmth without stuffiness.

Superior recovery compared to down

With recovery performance that surpasses down, loft and warmth are maintained even after long-term use.

Warm, yet comfortably breathable

Warm, yet comfortably breathable

Exceptional moisture absorption and release eliminate clamminess.
Crafted with highly breathable fabric for lasting comfort without stuffiness.

02RELAX & COZY

Ultimate comfort and wearability

A fabric that surpasses cashmere and wool, wrapping the body in comfort from the very first moment

A fabric that surpasses cashmere and wool, wrapping the body in comfort from the very first moment

The skin-facing side features a proprietary fiber construction engineered to approach the feel of cashmere, soft and smooth to the touch.

The fabric is the same as used in the ultra-warm BRAIN SLEEP COMFORTER DUAL.

Lightweight and easy to slip on, designed for relaxation

Lightweight and easy to slip on, designed for relaxation

The Hanten features a relaxed unisex silhouette with a generously comfortable fit for effortless wear.
Warm, yet remarkably lightweight in feel.
Perfect for unwinding in the living room in effortless comfort.

03CLEAN
& COMPACT

Clean and compact

Machine washable at home
Antibacterial, deodorizing, and dust mite resistant

Machine washable at home
Antibacterial, deodorizing, and dust mite resistant

Can be washed in a standard home washing machine.
Featuring proprietary insulation with enhanced antibacterial performance, deodorizing properties to neutralize unwanted odors, and dust mite resistance for everyday cleanliness.

Compact and easy to carry anywhere

Compact and easy to carry anywhere

Pack it into the included pouch and take comfort wherever you go.
Thoughtful details ensure lasting comfort.

Designed not only for indoors, but refined enough for a quick trip outside.

MONITOR’S FEEDBACK

I used to feel cold no matter what I wore, especially on my back, and my shoulders would get stiff. The moment I put this on, I realized my back didn’t feel cold at all. It’s almost funny how warm it keeps my back.

It’s so warm that in an apartment, you might not even need the heater. If I’d known it was this warm, I would’ve gotten one for my parents too — kind of regret not doing that!

I live in a wooden apartment, and it makes a huge difference whether I’m wearing this or not. It honestly feels so warm!

managed to give these to my two grandmothers in time for Christmas. I was surprised at how compact they were in the package, but once I took them out, they were so fluffy.

It’s incredibly warm and I’m really happy with it. I asked my son in Nagano if it had arrived, and he said yes. It turned into a Christmas present I actually got a ‘thank you’ for.

DEVELOPMENT STORYBehind the development

Commitment to quality

I set out to reimagine the traditional Hanten, worn since the Edo period, by combining advanced technology with modern functionality and design. My goal was to honor its heritage while elevating it with innovation.
From a performance perspective, I focused on the back area, where cold is most easily felt, incorporating a space-inspired insulating sheet. For the overall fill, I selected multifunctional fiberfill, and for the skin-facing side, a warm yet breathable blanket fabric. Through this combination, I aimed to achieve ultimate warmth, comfort, and cleanliness.
In terms of design, I chose detailed quilting to prevent the fill from shifting, creating a refined and streamlined silhouette. I intentionally kept the collar clean without visible branding, placing the name subtly on the outer hem instead, using BRAIN SLEEP’s signature red as a quiet accent. The cuffs are finished with blanket fabric, so when folded back, the soft texture becomes visible — a small but thoughtful detail.
I hope this carefully crafted Hanten keeps you warm and comfortable.
Product developer: Takahiro Machida

SPECSpecifications

COLOR & SIZE

A versatile gray suited for any scene

■ Product size

※ As this is a Hanten-style design, the sleeves are slightly shorter (approximately 8–9 length). If longer coverage is preferred, please fold back the cuffs when wearing.

■ Materials
• Outer fabric: 100% polyester
• Lining: Pile portion 100% polyester / Base fabric 60% polyester, 40% rayon
• Filling: 85% polyester, 15% synthetic fiber (acrylate)
• Back middle layer: 100% polyester

■ Pouch size
H40 cm × W20 cm × D20 cm

UNISEX SIZE

A unisex fit designed to be worn comfortably regardless of gender, age, or body type

Male model: Height 183 cm / Wearing free size
Female model: Height 162 cm / Wearing free size

■ Size guide
(Unisex)

Also recommended as a gift

Made with a luxurious polyester twill fabric.
The packaging features a unified beige tone with matching ribbon, and the Brain Sleep logo is placed with a refined, elegant sizing.
The wide, lavish ribbon creates a premium, sophisticated feel that is perfectly suited for gifting.

FAQFrequently asked questions

Is it machine-washable?

Yes. It can be washed at home. Separate from whites and light-colored items, place in a laundry net, and wash. Washing separately is recommended.

Can I use bleach?

Please avoid bleach (chlorine or oxygen-based), as it may cause discoloration or fading.

How should I dry it?

Please avoid tumble drying, as it may cause shrinkage or damage. Line dry in the shade. When drying, gently pat the filling by hand to restore its loft.

How do I choose the right size?

This item is available in one free size, recommended for individuals 153–180 cm in height and 78–100 cm in chest circumference. As this is a Hanten, the sleeves are designed slightly shorter (approximately 8/10–9/10 length). If too long, fold the cuffs for adjustment.

Are there other color variations?

Available in one color: stone gray.

Will it shed or pill?

Due to the nature of the material, some pilling or shedding may occur with friction. Use of a laundry net is recommended when washing. Avoid pulling on the brushed fabric, as this may cause fibers to loosen.

Will the color fade or transfer?

Due to the characteristics of the dye, color transfer may occur when wet or through friction. Do not leave the product in a damp state.

商品レビュー

  • 5 stars: 19 (73%)
  • 4 stars: 5 (19%)
  • 3 stars: 2 (8%)
  • 2 stars: 0 (0%)
  • 1 star: 0 (0%)
n
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とっても暖かい

薄くて軽いのに、とっても暖かい半纏です!ゆったり感あるので、動きやすいのもいいです!

n
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ギフト用に最適です

母親へのギフトとして購入しました。寝覚めで体調を悪くすることも多かったのですがこれを送ってから寝る前に風邪をひく事がなくなりました。
お風呂のあとに映画を楽しそうに見ています。勝ってよかったです。

n
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寝る前の時間がとても快適になりました。

寝る前に仕事することが多くなり寒くなってきたため購入しました。とてもあたたかく、また、羽織りやすいのがいいです。またそこまで分厚くないので寝る前にも動き安く購入してとても良かったです。

n
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高評価でした

娘に昨年購入。暖かいと評判だったのでセールでもあり,自分用に購入。寒くなるのが楽しみ?です。

n
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暖かいです

肌触りがとても良く羽織った時に寒くなりにくいです。背中がホカホカします。

n
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袖口の扱いに困る

Makuakeで購入しました。
おしゃれな半纏で機能的には暖かくて満足なのですが、背の低い自分には袖が長くて、しかも半纏なだけ袖口が大きくて、何かにつけ家のドアノブ(レバーハンドル)等に引っ掻けてしまって扱いにくいです。
家で洗い物などするときに袖口の扱いに困ります。
いくつかのサイズに分ける、形状の変更など、今後の展開に期待します。

n
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背中暖かい

マクアケで購入した、ハンテンとても暖かく特に背中がぽかぽか暖かいです。お風呂あがりに着ています。
ただ、家事をするときは動きにくいので着られないのが残念です。

n
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最高に気持ち良い肌触り

暖かいのはもちろん、裏地の生地が最高に気持ち良いです。適度な重みもあり身体に馴染みます。もう離せません。

n
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暖かいです!

マクアケで購入。軽いし、とても暖かく、家でずっと羽織っています。

n
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軽くて着心地がいい

マクアケで購入しました。軽くて暖かい上着、かつ、ちょっとそこまでくらい出られるくらいのデザイン性のものが欲しくて探していたら、たまたまマクアケで見つけました。
着てみると、イメージ通りの良さで、かつ着心地も良かったので、買ってよかったです。

n
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色々気が利いている

パジャマ1枚に羽織っても十分に暖かいのは勿論ですが、袖口裏地の手触りがふわふわ毛布生地なのがすごく好き。ポケットも大きく、表地は毛玉になりにくそうな生地なのも良い。私はチビなので少し大きめですが、半纏ならこんなものかな、というサイズ感。流行りの宇宙服素材に興味をひかれてマクアケで購入しましたが、買って良かったです。

n
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暖かく使い勝手はいいです。

n
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とにかく暖かい

Makuakeで2枚購入しましたが、本当に暖かいです。
小学生の娘も気に入って、家族で商品の取り合いになるほど。
デザインもおしゃれで、これを羽織って近場であれば買い物も十分行けます。
総じて大満足です。

n
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着るパーフェクトウォーム。

Makuakeで応援購入しました。
冬にごみ出しや郵便受けまで郵便を取りに行ったりするなど屋外の近場に出る際、これまでは外出用のダウンコートを都度着ていたところ、このハンテンを羽織るようにしてからはダウンコートは要らなくなりました。
掛け布団の場合と同様に、ダウンコートだと暑くなりすぎることがありますがこのハンテンではそれがないのも大きなメリットと考えます。

n
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マクアケで購入

マクアケで購入しました。
フリーサイズで、私には少し袖丈が短かったです。
でも暖かいです。

n
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暖房着

タイトルの通りの本当に暖かなハンテンでした。
購入する前は本当に暖かいのか半信半疑でしたが、このお正月に東北の写真のように家が雪で埋まるくらいの寒冷地で暖房を入れなければマイナス気温の部屋ですが、石油ファンヒーターで暖房入れても部屋の気温12度一定にしてハンテン着用したら寒さを感じる事もなくマクアケで購入して良かったと安堵しています。寒さを感じずホットな気持ちで正月を過ごすことができ石油の省エネにも寄与でき感謝しています。
前触れ通りのハンテンでした。

n
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暖かいらしい

両親にプレゼント。とても暖かいようです。
自分達の分も買えば良かったと思いました。
ただ少し不満なのが、袖口が広いので洗い物をする時に不便だそうです。
半纏なので仕方ないと思いますが。

n
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柔らかで暖かい

Tシャツの上に着て外に出ても寒くない。
とっても柔らかく、寝転んでも背中がごろごろしない。
見た目も派手さがなく、オシャレな半纏で気分もあがる。
家族みんなで共有できるサイズ。
購入して良かったです!

n
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薄い

マクアケで購入したこのハンテン。
薄い。
見た目、薄くて本当に暖かいの?って感じ。実際着てみると暖かい。特に背中が。
買ってよかった〜。

n
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暖かい、でも大きさが・・・

makuake応援購入しました。内側の素材は手触りよく暖かい。しかし、購入時に身幅があまり大きくなさそうと心配でしたが、的中。前が合わさらないので寒い。ワンサイズなのが残念。ボタンで止めるので、さらに広がる。昔からの半纏のように紐を結ぶタイプならよかったかも。でもほんとうに暖かいので、着るよりもブランケットとして使用しています。

n
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暖かいです

手にしたときに若干重たいかな?と思いましたが、裏地のさわり心地が気持ちよくて暖かいです。
おしゃれな半纏としてこの冬重宝しそうです。

n
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満足

日にちが経っていないので分かりませんが着心地は問題はありません。羽織ってればさほど寒さは感じません。着心地も良いです。買って良かったと思います。

n
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大満足!

このシリーズの布団が良かったので購入しました!子どもが毎日着用してます!        

n
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マクアケで購入

軽くてポカポカして父親が大変喜んで居ました
自分用に購入すれば良かった。

n
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マクアケで購入

年齢か年々寒さが身に染みるようになり、暖かくて気安いものをと思い購入。
暖かさはとても良いと思いますが、小柄な人には少し重く感じます。

n
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暖かい

凄く暖かいです。
12月中旬の今はこちらを着ていれば暖房はつけなくても大丈夫な感じです。
着心地も良くて大満足です。
マクアケで購入出来たので2着購入もお値段もお得だったので良かったです。

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