After starting the aero jersey revolution in pro cycling, Castelli have continued to perfect this piece. Version 5.1 builds on the race-leading aerodynamics while making the jersey more comfortable and durable. Updated fabrics on the front and back showed a 2-watt gain in the wind tunnel compared to the previous version.
But it’s not just aero; it’s also extremely light, coming in at just 103g. That’s about 40g lighter than a standard jersey and almost as light as our Climber’s Jersey. Just like you, our pro riders are looking for comfort, and the lightweight polyester fabrics in this jersey dry nearly instantly, making this the go-to choice even for cool- or wet- weather racing, while the compression band around the pockets keeps them from moving or bouncing no matter how you load them up.
- Castelli's most aero jersey
- Velocity dimpled fabric on front
- 3D mesh on back to prevent overheating
- Mesh arm bands
- Compression band around waist keeps 3 rear pockets in place
- Silicone gripper elastic
- Full-length YKK® Camlock zipper
- Reflective heat-transfer viz strips
- Weight: 103g
Castelli roots can be traced back to a fine tailor, Vittore Gianni, in the heart of Milan, founded in 1876. It wasn’t until 1935 when a young Armando Castelli joined the company and transformed its future into the cycling apparel brand that it is today. Still in touch with their roots, Castelli products have a sophisticated Italian style, married with perfect fit and comfort