
Elevate Your Everyday.
C HIGH END Merino Wool Long Sleeve T-Shirt
Designed with a higher back neckline for jacket wear.
The luxurious touch of Super100’s wool refines your winter business style.
Super100’s Merino Wool: Six Essential Functions
The finest material shared across all C-one T-shirts. One piece that transforms everyday comfort.
A Refined Essential for Everyday Wear
This Japanese-made long sleeve T-shirt features a higher neckline, carefully designed to prevent jackets from directly touching the skin. Compared to conventional T-shirts, it reduces friction and discomfort. Made from fine merino wool, it offers excellent breathability and comfort, even in warmer seasons. A versatile piece suitable for business and casual wear alike.
Designer’s Philosophy
C-one T-shirts are not just garments. They are crafted to bring comfort and refinement into daily life, with meticulous attention paid to every unseen detail.
01. Jacket-Friendly Pattern Design
The carefully shaped neckline slightly peeks out from under a jacket, preventing direct skin contact and protecting the jacket from wear.
02. Timeless Unisex Silhouette

Perfect for work, shopping, travel, or everyday activities.
C HIGH END Merino Wool Long Sleeve T-Shirt:
Crafted with C-one’s Attention to Detail
From material selection to sewing techniques, no compromises are made. This is a piece 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 pattern creates a refined silhouette without clinging to the body. Casual yet elegant, it pairs effortlessly with any bottoms.
02. Japanese Craftsmanship
To fully bring out the delicate nature of Super100’s merino wool, C-one relies on skilled Japanese artisans for knitting and sewing. The craftsmanship hidden beneath the surface ensures durability, shape retention, and long-lasting beauty.
03. Honest Pricing
By working directly with trusted domestic factories and eliminating intermediaries, we achieve uncompromising quality at a fair price. What you feel on your skin—and over time—is genuine value.
Staff Styling: A Versatile Essential for Everyday Life
“How should I wear it?” Based on customer feedback, here are recommended styles for the C HIGH END Merino Wool Long Sleeve T-Shirt. (Please refer to height and wearing size.)
Yoshi / Height: 168cm
Size: M
Perfect as an inner layer. The higher back neckline prevents direct skin contact when worn under a jacket.
Gina / Height: 155cm
Size: S
A perfect fit in size S. Lightweight yet warm, and the sleeves are not too tight.
Merry / Height: 157cm
Size: S
Not too loose, with a beautiful drape. Easy to wear on its own.
Tei / Height: 168cm
Size: M
The sleeve length stays clean and sharp. Ideal as a jacket inner without bulk.
Size Guide
| Size | Length | Bust | Shoulder | Sleeve |
|---|---|---|---|---|
| S | 65cm | 91cm | 40cm | 55cm |
| M | 69cm | 105cm | 46cm | 60cm |
| L | 73cm | 113cm | 48cm | 61cm |
| LL | 76cm | 119cm | 50cm | 62cm |
Measurements are taken flat. Minor differences may occur. We recommend comparing with your own T-shirt.