FN-THW-002 Raglan Sleeve Thermal T-Shirt Black
A relaxed raglan thermal T-shirt crafted by The Flat Head in Japan from an original 12oz tubular knit combining honeycomb and rib textures — soft, lightweight, and endlessly versatile.
| SIZE | 40 (M) | 42 (L) | 44 (XL) |
| Chest | 110 | 120 | 130 |
| Waist | 53 | 56 | 59 |
| Opening | 46 | 48 | 51 |
| Lenght | 70 | 72 | 74 |
| Raglan Sleeve (from collar to the end of the cuff) | 45 | 48 | 51 |
Model size
Saliou is 183 cm (6'0") tall, weighs 70 kg (154 lbs), and wears a size 40.
The Flat Head is a unique take on the classic thermal shirt, combining a modern relaxed raglan silhouette with a highly unusual dual-construction fabric. Much lighter and airier than typical thermals, this shirt is designed to be comfortable in warmer weather while functioning as a refined layering piece in cooler seasons.
What makes this garment a true anomaly is the fabric itself. It is tubular knit — the body has no side seams — yet it combines two distinct knitting patterns in a single seamless construction. The bulk of the shirt is a classic honeycomb thermal knit, prized for its softness and thermal properties, while rib knitting on the sides and back provides a body-hugging structure and enhances the shirt's silhouette. This dual-construction cloth is produced on a wholegarment knitting machine, allowing both structures to be knit as one continuous piece — a genuinely rare technical feat.
The collar is finished with The Flat Head's distinctive "triple-needle single-drop" stitching — a signature construction detail sewn with #30 gauge cotton thread, refined enough to preserve the fabric's softness while providing exceptional collar stability over years of wear.
The raglan sleeve construction adds both ease of movement and a casual, relaxed visual profile — completing a shirt built for effortless everyday wear. The fabric has been rinsed for a broken-in feel from the very first wear.
Fit Notes: This shirt fits true to size. Compared to most global American brands, we recommend taking your usual size for a comfortable, slightly relaxed fit. As always, we strongly recommend checking our size chart and comparing it with your best-fitting shirt to find the perfect size.
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Details
Shipping
Spain
FREE SHIPPING on orders over 100 EUR .
6 EUR shipping cost on orders under the value mentioned above.
European Union & The UK
FREE SHIPPING on orders over 150 EUR \\.
14 EUR shipping cost on orders under the value mentioned above.
Rest of the World
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25 EUR shipping cost on orders under the value mentioned above.
Returns
If for some reason you are not happy with your purchase you can return it to us within 14 days for a size exchange or refund.
For more info please visit our returns & exchange page.
Please note that items in the SALE category are considered FINAL SALE, with no returns or exchanges accepted.
Reviews
| SIZE | 40 (M) | 42 (L) | 44 (XL) |
| Chest | 110 | 120 | 130 |
| Waist | 53 | 56 | 59 |
| Opening | 46 | 48 | 51 |
| Lenght | 70 | 72 | 74 |
| Raglan Sleeve (from collar to the end of the cuff) | 45 | 48 | 51 |