Flanders Warm Long Sleeve Base Layer - Men
- 1 in stock
- Backordered, shipping soon

The measurements presented are for guidance only and are based on body measurements. Actual fit may vary depending on garment cut and desired style. For optimal choice, trying on is the best option.
Castelli uses Italian/European sizing, which is generally more fitted than North American standards. If you are between two sizes or prefer a looser fit, we recommend choosing the next size up.
Tops - Men
| Size | Chest (cm) | Waist (cm) |
|---|---|---|
| XS | 86 | 76 |
| S | 94 | 80 |
| M | 96 | 84 |
| L | 104 | 88 |
| XL | 108 | 93 |
| XXL | 110 | 98 |
| XXXL | 115 | 103 |
Tops - Women
| Size | Chest (cm) | Waist (cm) | Hips (cm) |
|---|---|---|---|
| XS | 79 | 63 | 87 |
| S | 84 | 68 | 92 |
| M | 89 | 73 | 97 |
| L | 94 | 78 | 102 |
| XL | 99 | 83 | 107 |
Bottoms - Men
| Size | Waist (cm) | Hips (cm) | Inseam – Regular (cm) |
|---|---|---|---|
| XS | 90 | 81 | |
| S | 94 | 82 | |
| M | 98 | 83 | |
| L | 102 | 84 | |
| XL | 107 | 85 | |
| XXL | 112 | 86 | |
| XXXL | 117 | 87 |
Bottoms - Women
| Size | Waist (cm) | Hips (cm) | Inseam – Regular (cm) |
|---|---|---|---|
| XS | 63 | 87 | 75 |
| S | 68 | 92 | 76 |
| M | 73 | 97 | 77 |
| L | 78 | 102 | 78 |
| XL | 83 | 107 | 79 |
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
All prices are displayed including taxes.
The amount shown is the final price you pay at checkout (shipping fees may apply).
Free shipping on all orders of $200 or more, in Canada and the United States.
Orders ship within 48 hours.
Enjoy 14-day returns after delivery.
Items must be new, unworn, and with original tags attached.
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
The Castelli Flanders Warm long-sleeved technical base layer is designed to provide maximum insulation for cold weather rides. Its SottoZero fleece fabric effectively retains heat while wicking away moisture to maintain optimal comfort. Its mid-height collar offers additional protection against the cold without restricting movement.
Key features
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Long-sleeved thermal base layer
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Warm and breathable SottoZero fleece fabric
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Mid-height collar for better thermal protection
-
Excellent moisture wicking
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Merrow flat seams for added comfort
-
Mesh inserts under the arms
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Designed for cold conditions
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Close-fitting cut suitable for layering
Materials
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Main fabric: 100% polyester
-
Armpits: 93% polyester / 7% elastane
Highlights
✔️ Optimal thermal insulation in cold weather
✔️ Soft and comfortable fleece fabric
✔️ Excellent moisture management during exertion
✔️ Mid-height collar effectively protecting against the cold
✔️ Flat seams reducing irritation
✔️ Mesh zones promoting breathability
✔️ Ideal as a first layer for winter rides