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Castelli Stelvio WindStopper Jacket

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Item # CST0439

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Item # CST0439


Of all the miles we log in a year, the prospect of cold winter base miles can sap motivation faster than a warm bed. The problem isn’t staying warm. There are plenty of winter jackets out there. The problem is staying warm and dry three or four hours into a ride. Most jackets that can keep you warm when the temperature hovers above freezing don’t breathe too well. The Castelli Stelvio WS Jacket is a notable exception.

What makes this jacket different is its use of Windstopper X-Fast fabric. This more breathable and stretchy fabric features brushed fleece on the inside for improved moisture transfer while remaining completely wind-proof. Castelli Stelvio WS Jacket DetailStrategically placed Windstopper X-Lite panels in the back and sleeves allow the jacket to enjoy a more form-fitting cut thanks to the material’s stretch, while also giving outstanding breathability.

A flip-up collar cut from stretchy and fleece-lined Thermoflex will keep the wind from running down your chest on chilly descents. The Stelvio Jacket has an effective temperature range that runs from just above freezing to the low-50s.

Three rear pockets give you all the carrying capacity of a jersey while eliminating the need to open your jacket for food. Reflective tabs on back will help keep you visible at dawn and dusk.

The Castelli Stelvio WS Jacket comes in five colors and is available in six sizes from Small through XXX-Large.

  • WindStopper fabrics are windproof and water-resistant to keep you warm and dry
  • Flip-up collar adds more protection when the weather gets really nasty
  • 3 standard pockets give you plenty of room to stuff your essentials
  • Reflective features on front and back increase your visibility to motorists

Tech Specs

3 back
[body] Windstopper X-Fast, [insert] Windstopper X-Lite
European race
Recommended Use:
cold weather cycling
Manufacturer Warranty:
30 days

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Here's what others have to say...


Love my purchase

    Very good product. i bought red/black colour and I look like spider man now! awesome fit and design.

    This jacket is good for -10 degree celcius to +15 C. You it goes below, you better pedal hardcore to sweat or put another layer/base garment. If its too hot, just unzip it or remove it SIMPLE!

    The only thin I wish it had was a hoodie... sometimes in Montreal the wind are cold and freeze my ears and brain which makes me really dizzy.

    Very good product for very good deal!



      Great jacket - very comfortable, very warm. I end up wearing it all thie time and look like a tool.



        Great jacket - very comfortable, very warm. I end up wearing it all thie time and look like a tool.


        Perfect for me.

          I can take this jacket from low 50s to low 30s with the right base. Windstopper works much better than anticipated. Sizing is good, don't let the 'european race' in the description fool you, it's the same as slim fits used to describe other items from Castelli.
          If you can stop the wind from getting to your chest, and even more importantly your arms you can have much better rides, this jacket will allow that. Not bulky, fairly light, comfortable, stylish, I say get it.

          Unanswered Question

          Write your question here...I'm looking for...

          Write your question here...I'm looking for a winter road riding jacket and am considering the Castelli Stelvio and the Gore Tool. What are the differences in: amount of reflective piping, warmth, rear drop length , quality of construction? etc.

          What does european fit mean. I wear an xl...

          What does european fit mean. I wear an xl size shirt

          European Fit essential means Cyclist build if you have the classic cyclist body (Small upper body, Flat Stomach and Larger Legs) then Castelli's sizing will be correct for you. If you have more of a classic american build (Larger through the Shoulders and Torso) then you need to size up accordingly.