Men's Short Sleeve Bolero Technical Underwear
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.
Important — Italian sizing
Castelli is an Italian brand and its garments run small compared to North American standards. Plan on one to two sizes up from your usual size. Don't go by the letter on the label — go by the measurements in the table below. This is normal: the brand's range goes up to 5XL.
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 |
Why this price?
- Samples and overstock from major brands
- New products
- Limited quantities – no restock
The Castelli Bolero short-sleeved base layer combines aerodynamic performance with temperature regulation. Designed to be worn under fast jerseys or Sanremo BTW suits, it helps save a few watts while effectively wicking away heat and perspiration. Lightweight and breathable, it remains comfortable during races in warm weather, between 18 and 35°C.
Main features
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Race-cut base layer for optimal performance
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Short sleeves with aerodynamic ribs to disrupt airflow
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Open mesh body to promote ventilation and keep you dry
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Lightweight: 88 g (size L)
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Compatible with Aero 7.0 jerseys and Sanremo BTW suits
Materials
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Main fabric: breathable mesh
Strengths
✔️ Aerodynamic improvement thanks to the aerodynamic ribs on the sleeves
✔️ Comfort and freshness with the ventilated mesh body
✔️ Lightweight so as not to weigh down your running outfit
✔️ Keeps you dry even during intense activity
✔️ Perfect for temperatures from 18°C to 35°C
✔️ Suitable for wearing under jerseys and quick suits
