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Unisex C HIGH END Merino Wool T-Shirt
Unisex C HIGH END Merino Wool T-Shirt
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At C-one, we offer a paid gift box and message card service.
Please use this option when choosing a gift for someone special.
Box size:
H 20.5 cm × W 25 cm × D 5 cm
Message card size:
H 5.5 cm × W 9 cm
Gift box service / ¥500 (tax included)
*The price is the same even with a personalized message.
To use the gift box service,
please select your product first,
then add the gift option on the cart page.
Gift wrapping notes
・One paid gift box is available per product.
・If you order multiple items at the same time, one box will be provided for each item.
・Partial gift wrapping (only selected items) is also available.
Refine Your Everyday.
C HIGH END Merino Wool T-Shirt
Crafted from Super100’s Merino wool and expertly made in Japan.
A refined T-shirt designed with a slightly higher back neckline to protect your jacket from friction.
Super100’s Merino Wool: Six Essential Natural Functions
The finest material used across all C-one T-shirts — Super100’s Merino wool. This single piece quietly elevates your everyday life.
Do Any of These Sound Familiar?
“Wool feels itchy on my skin.”
“Sweat makes me feel uncomfortable and concerned about odor.”
“Premium clothes seem difficult to care for.”
Super100’s Merino wool from C-one solves all of these concerns — naturally.
Refine Your Everyday.
This T-shirt is designed and made in Japan with a slightly higher neckline, preventing direct contact between your skin and jacket when layered. Compared to conventional T-shirts, it reduces friction and discomfort around the collar. Crafted from fine Merino wool, it offers exceptional softness, breathability, and moisture control, keeping you comfortable even in warm conditions. From business attire to casual styling, this versatile piece fits seamlessly into everyday life.
Designer’s Commitment
C-one T-shirts are more than just garments. Every unseen detail reflects the designer’s philosophy — bringing calm, refinement, and lasting comfort into the wearer’s daily life.
01. Thoughtful Design for Versatile Wear

Developed from the structure of the human body and refined repeatedly by skilled pattern makers. The three-dimensional pattern delivers a clean silhouette with a comfortable, natural fit.
02. Collar Structure Designed for Jackets

The collar has been carefully engineered through repeated prototyping. It subtly rises above the jacket neckline, preventing direct skin contact, reducing friction, and helping keep your jacket clean and long-lasting.
C HIGH END Merino Wool T-Shirt: Attention to Every Detail
From material selection to sewing techniques, no compromises are made. This is a garment designed to impress every time you wear it.
01. Premium Materials
The natural drape of Super100’s Merino wool combined with C-one’s original patterns creates a refined silhouette that never feels restrictive. Elegant, versatile, and easy to coordinate with any style.
02. Expert Japanese Craftsmanship
To fully bring out the delicate nature of Super100’s Merino wool, each piece is knitted and sewn by experienced Japanese artisans. This craftsmanship ensures durability, shape retention, and long-term comfort.
03. Honest Pricing
By working directly with trusted domestic factories and eliminating unnecessary intermediaries, C-one delivers uncompromising quality at a fair price. This is clothing that reveals its true value the more you wear it.
Staff Styling: How We Wear It
Unsure how to style it? Here are real-life examples of how our staff wear the C HIGH END Merino Wool T-shirt. (Height and wearing size are listed for reference.)
Jimmy / Height: 170cm
Size worn: LL
The fit is just right. The slightly higher back collar helps prevent stains when wearing outer layers.
Inui / Height: 177cm
Size worn: M
Not too loose, not too tight. The natural drape makes it easy to wear on its own.
Merry / Height: 157cm
Size worn: M
The silhouette is clean without clinging. Very comfortable even when worn directly on the skin.
Tei / Height: 168cm
Size worn: M
A perfect fit as an inner layer. Smooth, breathable, and comfortable even under a jacket all day.
Gina / Height: 155cm
Size worn: S
Worn in size S. The fit is flattering without feeling restrictive, and there is no itchiness at all.
Size Guide & Care Instructions
Size Guide
| Size | Length | Chest | Shoulder | Sleeve |
|---|---|---|---|---|
| S | 66cm | 91cm | 40cm | 17cm |
| M | 69cm | 105cm | 46cm | 20cm |
| L | 73cm | 113cm | 48cm | 20.5cm |
| LL | 76cm | 119cm | 50cm | 21.5cm |
*Measurements are taken flat. Slight variations may occur.
We recommend comparing with a T-shirt you already own.
Care Instructions
Super100’s Merino wool is designed for easy home care. With proper washing and storage, it will retain its softness and shape for years.
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複数着揃え干した状態でローテーションすると冬の間は洗濯いらず。
汗冷え予防のため購入しました。ウールTシャツ生地は冬のものと違って毛立ちがしません。密度が高いため、かたちは保たれて着崩れはしない感じです。首後ろはやや高いデザインは違和感なくきれいです。ありがとうございました。
ポロシャツと違って、こちらは袖丈が短めです。個人的にはもう少し長ければ良いですが。