Castelli Sinergia 2 FZ Jersey
The Castelli Sinergia 2 FZ is the ideal thermal jersey for autumn and spring rides, designed to provide comfort, breathability, and thermal protection in the mid-seasons.
It is the perfect choice for those looking for a lightweight yet warm jersey, to wear alone on cool days or as a mid-layer under a jacket on colder days.
Castelli designed this jersey based on a simple concept: a thermal should not be bulky or complicated, but offer everything a cyclist needs.
For this reason, the Sinergia 2 FZ combines high-quality fabric, ergonomic fit, and functional details, such as well-structured rear pockets and the smooth and durable YKK® Vislon® zipper.
Why choose it
During the transition season, most cyclists use long-sleeve jerseys only for a few days, alternating them with vests or jackets depending on the temperature.
The Sinergia 2 FZ perfectly adapts to these conditions, ensuring thermal insulation without excessive thickness and constant comfort in every situation.
Thanks to the Warmer fabric, it offers uniform warmth and a pleasant softness on the skin, while maintaining excellent breathability.
Main features
Warm Warmer fabric:
Soft, elastic, and thermal, ideal for cool spring and autumn days.
Distinctive Castelli design:
With Castelli stripe and logo on the chest for a clean and sporty look.
Lightweight and smooth YKK® Vislon® zipper:
High-quality zipper that allows quick ventilation adjustment even while riding.
Three rear pockets:
Large and easily accessible, perfect for storing items, snacks, or smartphones.
Reflective piping on the back:
Reflective detail that increases visibility and safety in low light conditions.
Technical specifications
Fabric: Warmer
Number of rear pockets: 3
Zipper: YKK® Vislon® full front (Full Zip)
Reflective details: Yes, on the back
Weight: 259 g
Recommended temperature range: 12°C – 18°C / 54°F – 64°F
Main advantages
Perfect for mid-seasons (autumn and spring)
Thermal but lightweight, not bulky
Excellent insulation and breathability
Smooth and durable zipper
Comfortable fit and sporty cut
Greater safety thanks to reflective details
