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Perfetto RoS 3 Jacket - Men's
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Perfetto RoS 3 Jacket—breathable, water-resistant shell for winter cycling
What Our Gearhead® Experts Are Saying:
"This jacket’s a game-changer. It’s warm enough for winter training, but I never overheat thanks to the breathability. Plus, the zippered chest vents and the snug fit make it perfect for aggressive rides in iffy weather."
The Perfetto RoS 3 Jacket is Castelli’s latest iteration of the iconic Perfetto series—bringing windproof and water-resistant protection together with exceptional breathability for hard winter rides. Built with Polartec® AirCore™ fabric, it’s tough enough for gusty days yet comfortable for hours in the saddle.
The longer tail shields against road spray, while zippered chest vents and a full-length YKK® Vislon® zipper provide precise temperature control. Three rear pockets with drainage holes keep your gear dry and secure, and reflective piping adds visibility for early morning or dusk spins.
Whether you’re climbing out of the saddle or tucking in for a fast descent, the Perfetto RoS 3 Jacket delivers the perfect balance of protection and performance—keeping you comfortable and moving strong no matter how cold or wet the weather gets.
Details
- Built for cold, wet rides with highly breathable protection
- Polartec® AirCore™ air-permeable membrane offers lightweight weather defense
- Uninsulated for layering flexibility in cool conditions
- Three rear pockets with drain holes for ride essentials
- Top- and bottom-opening YKK® Vislon® zipper for easy venting
- Reflective piping at pockets and seams for visibility in low light
- Longer tail to shield from road spray on wet rides
- Zippered vents on the chest for extra airflow when climbing
- Item #CSTZ80I
- Material
- Polartec AirCore (synthetic)
- Season
- spring, fall
- Fit
- slim
- Length
- hip
- Venting
- 2 zippered side
- Pockets
- 3 rear drop
- Reflective
- shoulder seams, hem details
- Activity
- road cycling, gravel
- Manufacturer Warranty
- limited 2 year
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Frequently Asked Questions
What is the Perfetto RoS 3 Jacket designed for?
RoS stands for Rain or Shine: it is a close-fitting, uninsulated shell for cool, damp or changeable road and gravel rides. The Polartec AirCore membrane blocks wind and sheds water while letting heat and moisture escape, so you can keep it on through hard efforts.Is the Perfetto RoS 3 waterproof?
It is built to be windproof and water-resistant rather than a fully waterproof rain jacket. It handles showers, wet roads and road spray, which the longer tail helps keep off your back; for hours in a steady downpour, a dedicated waterproof rain jacket is the better choice.How should I layer it?
The jacket has no insulation, so your warmth comes from what you wear underneath. A base layer is enough on cool days; add a thermal long-sleeve jersey as temperatures drop, and use the two-way zipper and zippered vents to dump heat on climbs.How does the fit run?
Castelli lists the Perfetto RoS 3 as a slim fit, and its Italian sizing tends to run smaller than casual apparel sizes. Compare your chest measurement with Castelli's size chart, and consider going up a size if you plan to wear a thermal jersey underneath.How do I wash a membrane cycling jacket?
Close the zippers, machine wash cold on a gentle cycle with a mild or technical detergent, and line dry away from direct heat. Skip fabric softener and bleach, which can clog the membrane and strip the water-repellent finish on the face fabric.







