Castelli Expanded Winter Cycling Apparel Line
The new jacket series uses PFAS-free membrane technology to offer varied insulation for cold-weather riding.
Updated on Sept. 23, 2026 in Cycling
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Castelli has launched the Perfetto 4, Perfetto Pro, and Gabba Pro cycling jackets. These garments incorporate Polartec AirCore technology to provide thermal protection for cyclists during colder months.
Why it matters
The expanded product line offers increased insulation options compared to previous iterations, helping riders better regulate body temperature in fluctuating winter conditions. The use of PFAS-free materials reflects a shift toward more sustainable textile manufacturing in professional-grade sportswear.
The new jackets utilize Polartec AirCore, a PFAS-free membrane constructed from recycled polyester yarns. This fabric is featured at 219g for the Perfetto 4 and 150g for the Pro line, with Castelli and Sportful holding exclusive cycling industry rights to this material.
The players
Castelli
An Italian cycling apparel manufacturer known for developing performance winter gear.
Polartec
A developer of advanced performance textiles and technical membranes used in outdoor gear.
Soudal Quick-Step
A professional road cycling team that tests and validates apparel in competitive racing environments.
The details
The Perfetto 4 was engineered for temperatures between 4°C and 12°C, utilizing a heavier 219g AirCore membrane to improve warmth over the older Perfetto RoS 3. In contrast, the 150g fabric in the Perfetto Pro and Gabba Pro is designed for higher-intensity efforts in milder 6°C to 14°C conditions. The Perfetto 4 also features a revised splash tail design equipped with metal drainage holes to prevent water accumulation during wet rides.
Timeline
2026: Soudal Quick-Step cyclists utilized the Perfetto Pro jacket throughout the season.
2025: Polartec AirCore technology first debuted in the Perfetto RoS 3.
Health Landscape
The transition to PFAS-free membranes marks a significant shift in the high-performance cycling apparel market. This evolution updates the previous standard of care by moving toward recycled materials without sacrificing the thermal properties required for winter training.
Cyclists seeking winter gear should evaluate their local climate requirements against the temperature ratings of 4°C to 12°C for the Perfetto 4 and 6°C to 14°C for the Pro models. When selecting technical layers, consider discussing your specific riding intensity and sweat management needs with a specialized coach or retailer.
The takeaway
When choosing winter apparel, prioritize fabrics that offer a balance between thermal insulation and breathability to manage core temperature. Always ensure your gear is appropriate for your specific regional temperature ranges and riding style to prevent overheating or cold exposure during long rides.
Further reading
For more on staying comfortable during off-season training, see our Cycling section.
More information
Review the full specifications for this material at the Polartec AirCore technology product details.
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