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- 10% OFF on purchases of 2 or more items [Official Store Exclusive]
- Free COD fee
- Free nationwide shipping
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サイズ・カラーを選択してからカートに追加してください。
⚠ Import duties for international orders: Prices do not include import duty or VAT. Thailand: approx. 1,430 THB (about 45% of the item price) will be collected by Thailand Post on delivery. Malaysia: orders under RM500 are exempt. Ships from Japan by EMS (3–7 days). International orders are final sale (no returns or exchanges). See shipping policy.
The areas most exposed to sunlight are your face and neck.
Your face and neck are the parts of your body most exposed to the sun, and the hardest to hide.
The CORE SHIELD® Bucket Hat uses the same functional material, Trubeaute®, as our inner layers.
The full-brim design covers your face, ears, nape, and neck area.
Sunscreen needs to be reapplied every two to three hours.
With a hat, you're protected the entire time you wear it.
Sunscreen only protects against about 5% of sunlight
Of the sunlight energy that reaches the earth's surface, only about 5% is ultraviolet (UV) radiation. The remaining 42% is made up of near-infrared rays. Near-infrared rays have a longer wavelength than UV rays and are noted for reaching deep into the skin.
SPF, PA, and UPF are all metrics for UV radiation. There are no metrics for assessing infrared rays. When exposing your face and neck for long periods, you need protection not only from UV rays but also from near-infrared rays.

*Values derived by integrating the ASTM G173-03 standard solar spectrum (AM1.5 global irradiance/earth surface) by wavelength range. Total does not equal 100% due to rounding.
Fabric that protects against both near-infrared and UV rays
For situations where your face and neck are exposed for long periods, the CORE SHIELD® Bucket Hat utilizes Trubeaute®, a functional fiber that handles both near-infrared and UV rays.
It uses threads that reflect UV rays and threads that absorb near-infrared rays. The fabric combines two types of threads with different functions.
Trubeaute®: Functional fiber that protects your face and neck from the sun
Trubeaute® is a functional material that combines threads containing CWO®, which absorbs near-infrared rays, with threads containing titanium oxide, which reflects UV rays. The hat's fabric itself provides protection against both near-infrared and UV rays.
- Threads that absorb near-infrared rays: Contains CWO®, ceramic microparticles developed by Sumitomo Metal Mining Co., Ltd., also used in heat-shielding films for building and car windows.
- Threads that reflect UV rays: Combined with threads containing titanium oxide.
- Embedded in the fiber: The functional components are embedded directly into the fiber itself, not merely applied to the fabric surface.
*CWO® is a ceramic microparticle that uses rare metals, developed by Sumitomo Metal Mining Co., Ltd.
Covers your face, ears, nape, and neck
Caps with a brim only in the front leave the back of your ears and your nape unprotected. The full-wrap brim covers the sides and back just as well as it covers the front of your face.
Think about your posture when you're outdoors. When weeding or reading the slope of a green, you look down. In those moments, your nape is facing directly upward. If you look up, your face takes the sun directly.
Protection from every angle. That is the significance of the full brim.
The brim length varies by size from 65 to 75mm, providing ample width for a sun-protective hat. Please check the "Actual Size" table below.
The choice of beige
Black and navy are standard for sun hats, as darker colors are one way to prevent UV rays from passing through the fabric.
On the other hand, dark colors absorb visible light easily and retain heat in the sun. We have an article that goes into detail about why black is often the only choice for summer hats, along with the drawbacks of this.
Why is there so much black UV-protective wear?
The CORE SHIELD® Bucket Hat is available in beige in addition to navy and black. A color that matches any outfit and looks light under the sun.
A structure that releases heat for your head in lingering summer heat
The head is easily exposed to sunlight and is a part of the body where heat and humidity tend to get trapped inside a hat. The CORE SHIELD® Bucket Hat features a design to let trapped air escape.
4 side vents
Two vents on each side help release heat trapped inside the hat.
Internal mesh structure
Reduces humidity around the forehead and minimizes discomfort during long periods of wear.
Don't forget basic heat precautions
Please use this product in combination with proper hydration, salt intake, taking breaks in the shade, and pacing yourself.
*This product does not completely prevent heatstroke. Pay attention to temperature, humidity, and your physical condition. If you feel dizzy, experience headaches, nausea, or intense fatigue, stop your activity immediately.
Includes a chin strap for peace of mind on windy days
Includes a chin strap so you can use it with confidence on golf courses, job sites, or fields where it may be windy. Reduces worries about the hat shifting or blowing away, allowing you to focus on your work or game. The chin strap can be removed if necessary.
Water-repellent finish sheds sudden light rain
The fabric surface has a water-repellent finish to shed sudden light rain and splashes. It also makes sweat stains less noticeable, increasing its usability outdoors.
Feature List
- Uses Trubeaute®, a near-infrared and UV protective material
- Full-wrap brim (65–75mm length)
- Water-repellent finish
- 4 side vents
- Internal mesh structure
- Includes removable chin strap
- Available in 4 sizes (56, 58, 60, 62cm)
- Made in Japan (Kurume, Fukuoka)
Recommended for the following situations
Golf
A round takes about 4–5 hours, with almost no shade on the course. The full brim covers from your face to your neck, and the chin strap prevents shifting in the wind.
Outdoor work
On job sites where you are often looking down, your nape is constantly exposed to the sun. The full brim and ventilated structure provide protection against both sun and humidity.
Farm work
The brim, extending front to back and side to side, offers broad coverage for ears and neck. Ideal for long days spent outdoors.
Walking & Daily outings
Provides protection against both UV and near-infrared rays. Useful for shopping, school pick-ups, or any short daily outing. A go-to piece whenever you step out into the sun.
Made in Japan | Sewn in Kurume, Fukuoka
The CORE SHIELD® Bucket Hat is made in Japan, with the entire hat-making process carried out domestically. Each piece is carefully sewn by skilled craftsmen at a specialized hat factory in Kurume City, Fukuoka Prefecture.
Full coverage with a top-and-bottom set
It’s not just your face and neck that are exposed to sunlight. By combining this with a CORE SHIELD® inner layer, you can extend your protection against near-infrared and UV rays from your head to your entire body.
Our long-sleeve inner layers are available in a loose fit, providing a comfortable shape for everyday wear. The slim fit, designed to be worn under a polo shirt, is currently only available in select sizes and colors.
Click here for the full range of CORE SHIELD® products
Official Store Exclusive | 10% OFF when you buy 2 or more items
Product Specifications
| Item | Details |
|---|---|
| Product Name | CORE SHIELD® Bucket Hat |
| Color | Navy / Black / Beige |
| Size | 56cm / 58cm / 60cm / 62cm (Head circumference) |
| Material |
100% Polyester Contains Trubeaute® specialty fiber |
| Function | Near-Infrared & UV Protective Material / Water-repellent finish |
| Specifications |
Internal mesh structure 4 side vents Chin strap (removable) |
| Country of Origin | Made in Japan (Sewn: Kurume, Fukuoka) |
| Size (Circumference) | Brim Length | Body Height |
|---|---|---|
| 56cm | 65mm | 100mm |
| 58cm | 70mm | 100mm |
| 60cm | 70mm | 100mm |
| 62cm | 75mm | 100mm |
*Actual measurements taken with the item laid flat. There may be slight variations between individual products.
Measure your head circumference (one full circle passing slightly above the eyebrows and the most prominent part of the back of the head) and choose the size closest to that measurement. If you fall between sizes, we recommend choosing one size up, as wearing the hat deeper provides wider sun coverage.
Brim length varies by size from 65 to 75mm.
Cautions
- The relationship between near-infrared rays and photo-aging (wrinkles/sagging) is still a subject of ongoing research and is not a scientifically established conclusion.
- This product is apparel and is not intended to prevent or treat blemishes, wrinkles, or sagging.
- This product does not completely prevent heatstroke. Be sure to combine this with proper hydration, salt intake, taking breaks in shade or cool areas, and other appropriate heat-countermeasures.
- If you feel unwell, do not continue using the product. Stop activity immediately and move to a cool location.
- The water-repellent finish is not waterproof. In heavy rain, water may soak through the interior.
- Machine washable. We recommend using a laundry net to prevent deformation.
- Colors may look different depending on your monitor settings.
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