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Aria Shell Jacket - Women's

3.6 out of 5 stars
5 Reviews
Color:Dark Gray


Size Chart


Aria Shell Jacket

When Castelli redesigned their wind vest and jacket, they understood we need a lightweight layer that protects from the wind, without making us catch the breeze like a sail. The Aria Jacket combines a windproof front panel with a stretchy mesh back and side panels to keep the jacket close to our body, helping us look every bit as classy with it on as when we’re riding in a jersey alone. This is the ideal layer to bring along on a ride to stay warmer on the descent. We barely notice its 80g in our pocket while climbing and certainly appreciate the protection from the wind on the way back down to the cafe.


  • An ultralight packable wind jacket
  • Windproof front panel protects from wind to keep warm
  • Mesh back helps regulate temperature and maintains a slim fit
  • Stashes in its own rear pocket when not in use
  • Item #CSTZ7AG
[front] windproof microfiber, [sides, sleeve backs] mesh
spring, summer, fall
Center Back Length
[small] 25in
1 rear
Claimed Weight
[small] 2.9oz
Manufacturer Warranty
1 year

Overall Rating

3.5 based on 5 ratings

Review Summary

1 Stars - 1 reviews
2 Stars - 0 reviews
3 Stars - 1 reviews
4 Stars - 1 reviews
5 Stars - 2 reviews

Fits Slightly Small

Screen reader users: the following list provides a visual scale to illustrate the product fit. Please refer to the heading above for the fit type in text.
Runs smallTrue to sizeRuns large

What do you think about this product?


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5 out of 5 stars

April 11, 2024

Love this jacket.

I've used it several times
Size Bought:

I love this lightweight jacket. I think someone in another review said the arms were fairly narrow - and I agree with this. Fortunately, I have fairly thin arms or would’ve had to send it back. I can even wear lightweight arm warmers underneath. I am 5’10 and 140-145 lbs, and have long arms - I got the large, and it fits perfectly.

5 out of 5 stars

February 23, 2024

fitted jacket. love it

I've put it through the wringer
Size Bought:
5' 7"

most wind jackets are loose fitting. this is one of the fewer truly snug and fitted jacket I've found. it fits like a glove. I wear it all the time and I'm getting a 2nd color.

Jessica C
1 out of 5 stars

December 4, 2022

Sleeves are too narrow

I returned this product before using it

Other reviewers mentioned the same issue. Castelli needed to either make the sleeves wider or at least articulate the elbow. I’m fairly petite, and the sleeves aren’t terribly restrictive when the jacket is worn over short sleeves. But the sleeve, namely elbow region, become uncomfortable when worn over a long sleeve base layer. Forget wearing a thin fleece jacket underneath. The body fits true to size, except the shoulders are a bit too narrow. I like the venting that they have on the side body. This could be OK if you size up and only expect to wear short sleeves underneath. Returning this because I need a jacket that lets me layer a little, and U don’t like that this jacket is a little noisy.

Abi M

Originally reviewed on Backcountry.com

3 out of 5 stars

October 30, 2022

Very lightweight, runs very small

I returned this product before using it

I may have liked this in a large, but ordered a medium (my usual size) and could barely zip it. May have ripped had I flexed :-). Returned it.

mpj105279658 m

Originally reviewed on Backcountry.com

4 out of 5 stars

March 25, 2021

Almost perfect

The jury is still out on this one; the body is a form fit as described and true to size But ... the arms are 'super skinny tight' ?? and I have fairly skinny arms! Not sure how they will fit anyone with even 'regular' arms ... I am going to try on again with a short sleeved bike top and decide on either a return or a keeper. The 'vest' in the same theme fits like a dream.

Tracey M

Originally reviewed on Backcountry.com