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近赤外線を吸収する素材を練り込んだ生地|UPF50+

日焼け止めだけでは、太陽光対策は終わらない。

MEDIA RECOGNITION

Featured in the Media

CORE SHIELD® has been featured as high-performance wear that targets both near-infrared and UV rays — a new option for people who are active outdoors.

Golf, morning walks, life under the sun —
do you know this kind of struggle?

Endless sweat and discomfort

That heavy, sweat-soaked shirt clinging to your skin… Sweaty hands slipping on the grip when it matters most… Feeling so uncomfortable you just want to go home early…

The toll on your body

Exhaustion hits the moment your round or work is over… The heat leaves you foggy, unable to focus or think clearly… Still tired after a full night of sleep, unable to do what you want the next day…

Worries about the heat

Outdoors with nowhere to escape, wondering “will I get through today okay?”… Every news report about dangerous heat makes you afraid to go outside… Worried that feeling unwell will make you miss work or important plans…

What's really behind that struggle

It's largely caused by

“ Near-infrared rays ”

UV protection alone isn't enough!

Heat energy that passes through the skin and reaches deep inside

  • Carries heat into the core of your body
  • Builds up fatigue and accelerates skin aging
  • The real source of that piercing, draining heat on your skin
How near-infrared rays affect the body
Is your sun protection really enough?

Your skin may be protected,
but heat is still getting in.

Sunscreen & UV-cut

They protect the skin surface, but can't block heat energy from entering the body.

They prevent sunburn on the skin surface, but can't block the heat energy that reaches deep inside the body.

Can't stop near-infrared heat
Cooling innerwear

Feels cool when you put it on, but doesn't stop heat from building up inside.

It may feel cool at first, but it does little to stop the heat of direct sunlight from building up inside your body.

Can't stop heat fatigue
Parasols & hats

They block direct sunlight, but not reflected heat or heat that passes through fabric.

They block direct sunlight, but not heat reflected from the ground or heat that passes through the fabric.

Can't block near-infrared heat
A hat that works like a parasol you wear

The CORE SHIELD® Bucket Hat uses Trubeaute®, a functional fabric made with special ceramic microparticles derived from rare metals.

View the Bucket Hat
PREMIUM TECHNOLOGY

Near-infrared and UV rays —
double protection in one layer.

CORE SHIELD® high-performance innerwear and bucket hat, built for intense heat. The lineup now protects not only your body but also your head from near-infrared and UV rays.

CORE SHIELD Image 01 CORE SHIELD Image 02 CORE SHIELD Image 03 CORE SHIELD Image 04
FOR MENS
Tap to switch images
CORE SHIELD Sleeveless White Front CORE SHIELD Sleeveless White Back CORE SHIELD Sleeveless Black Front CORE SHIELD Sleeveless Black Back
SLEEVELESS FOR MENS No sleeves, more coolness. Our model made for the hottest days.
Tap to switch images
Ladies White Front Ladies White Side Ladies White Back Ladies Black Front Ladies Black Side Ladies Black Back
FOR LADIES (2026 MODEL)
Tap to switch images
NEW CORE SHIELD Bucket Hat product image CORE SHIELD Bucket Hat black CORE SHIELD Bucket Hat worn
BUCKET HAT Sun protection starts at your head. A Made-in-Japan hat made with fibers that absorb near-infrared rays.
Tap to switch images

革新的なプロテクトウェア

紫外線と近赤外線に、1枚で対応

CORE SHIELD®のインナーは、紫外線を反射する糸と、近赤外線を吸収する糸を組み合わせた生地を使っています。紫外線も近赤外線も、太陽が出ていれば一年中降りそそいでいます。季節を問わず、1枚で。

UPFが測っているのは、290〜400nmだけ

紫外線+近赤外線を同時に遮断

  • 紫外線カット機能 UPF50+(ホワイト97.1%・ブラック98.7%)
  • 近赤外線吸収素材を繊維に練り込み
  • Trubeaute®(トゥルーボーテ)採用
    このインナーには、先進の機能素材 Trubeaute® を使用しています。
  • 近赤外線を吸収する糸
    住友金属鉱山(株)のレアメタル由来の特殊セラミック微粒子を練り込んだ糸を採用。この微粒子は、可視光線を通しながら近赤外線を吸収する素材で、建物や車の窓の遮熱フィルムにも使われています。
  • 紫外線を反射する糸
    酸化チタンを練り込んだ糸を組み合わせることで、強力な紫外線カット性能を実現。

これにより、夏も秋冬も、紫外線と近赤外線に1枚で対応するという1年を通しての快適性と機能性を両立しています。

汗による不快感を溜め込まないドライキープ構造

超速乾+接触冷感で快適をキープ

  • 超速乾機能 通常のポリエステルの2倍
  • 接触冷感機能 吸湿冷感あり
  • 耐洗濯性能 洗濯寸法変化率1%未満
  • 汗による発疹や汗冷えなどを抑制
  • 動きを妨げない立体ストレッチ構造

    JIS規格(JIS L 1907・滴下法)による検査において、一般的なポリエステルの約半分の時間で乾くことが確認されています。超速乾機能により汗を溜め込まず、汗の不快感を大幅に軽減します。
    また、第三者機関であるケケン試験認証センターによる検査でも、接触冷感機能が正式に認められ、さらに洗濯後の寸法変化率はわずか-0.7%という優れた耐久性も証明されています。

VOICE OF CUSTOMERS

From people who had the same concerns Real users share their experience.

★ ★ ★ ★ ★
5.0

Less sweat after 18 holes.

The fabric is thicker than cooling shirts, so I was skeptical, but I clearly felt the difference on summer rounds. The burning feeling on the back of my neck eased, and I sweat noticeably less after 18 holes. I can't do without it now.

T.M

T.M.

Male, 60s · Weekly golfer

★ ★ ★ ★ ★
4.0

Like standing in the shade of a tree.

I could feel it keeping me cooler. Unlike cool-touch fabric, the coolness lasts. Especially when cycling and feeling the breeze, I actually feel cooler wearing it — just like stepping into the shade of a tree.

Y!

ban

Excerpt from a Yahoo! Shopping review

★ ★ ★ ★ ★
5.0

Better than I expected.

It kept the sun off and I stayed comfortable even under the blazing sun. I sweat more than most people, but it absorbed the sweat so it didn't run down. I also didn't get chilled by sweat when coming into an air-conditioned room. Better than I expected.

R

Keny

Male, 60s · Excerpt from a Rakuten review

★ ★ ★ ★ ★
5.0

No more “piercing” sun.

Even with sunscreen, I was getting more sunspots every year. When I learned that near-infrared rays contribute to photoaging, I decided to buy it. On my 20-minute bike commute, I no longer feel the sun piercing my arms and neck. I'm also happy that the high neck isn't uncomfortable.

K.S

K.S.

Female, 50s · Bike commuter

★ ★ ★ ★ ★
4.0

Cool the moment I put it on — even in the summer fields.

I thought long sleeves for farm work were something you just had to put up with in the heat. This feels cool the moment I put it on, and even in the fields in midsummer I feel less worn out. Four stars only because I'd love a beige color option too.

M.H

M.H.

Female, 60s · Farm work

★ ★ ★ ★ ★
5.0

“Wearable shade” for someone who dislikes air conditioning.

My son and his wife gave it to me after hearing that older people notice heat less easily. I don't like air conditioning, so it's like wearing shade. It's light and dries quickly after washing, so with two I can wear one every day. I see it as a tool for staying active for years to come.

S.A

S.A.

Female, 70s · Gardening / daily walks

*Excerpts and summaries of reviews from Amazon, Rakuten, Yahoo! Shopping (Japan) and customer survey cards, translated from Japanese. Individual experiences; results are not guaranteed.

LINE UP

For life under the sun,
find your perfect layer.

The full CORE SHIELD® lineup — everything from fabric production to sewing is done in Japan. Choose the one that fits your lifestyle.

\ 10% OFF when you buy 2 or more /
We recommend having two inners, or pairing an inner with the hat.

*Prices are shown in your local currency. Import duty and VAT may be charged on delivery. Ships from Japan by EMS.

JAPAN QUALITY

Japanese craftsmanship,
from fiber to finish.

Japan is known around the world for its uncompromising standards of quality and attention to detail. CORE SHIELD® carries that tradition into every piece we make.

Every step happens in Japan. The functional material uses special ceramic microparticles derived from rare metals. The fabric is produced in Japan, and each garment is sewn and packed by skilled craftspeople in Yanagawa, Fukuoka.

Our craftspeople use high-performance sewing machines also used for swimwear, creating a comfortable fit and seams that hold up wash after wash. Already worn by golfers, outdoor workers and daily walkers across Japan, and featured in Japanese newspapers including the Nishinippon Shimbun and Mainichi Shimbun — now available in Thailand and Malaysia.

近赤外線対策ウェアブランド

CORE SHIELD®(コアシールド)とは

CORE SHIELD®は、レアメタル由来の近赤外線吸収材料を配合した特殊繊維Trubeaute®を使用した、フェニックス株式会社の日本製ウェアブランドです。近赤外線(NIR)に着目し、近赤外線を吸収する微粒子を繊維そのものに練り込んでいます。UPF50+の紫外線カット、接触冷感、吸汗速乾機能を備え、ゴルフ・現場作業・農作業・散歩などの屋外活動を支えます。現在はインナーシャツと帽子を展開しております。今後もラインナップ拡充を予定しています。
近赤外線について詳しくは「近赤外線とは?紫外線との違いと熱中症・肌への影響」をご覧ください。

よくある質問

日差しも、気温も、意識の外へ。
暑さや紫外線・近赤外線に惑わされず、日々のパフォーマンスに全てを注げる環境をつくる。
「PNX」は「人々の挑戦を支える“第二の肌”でありたい」をコンセプトにした、高機能スポーツアパレルブランドです。

ブランドについて