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Castelli Sottile Due Jacket - Men's
Sale $31.48$89.95 $ 65% Off

Item # CST2602

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  • Transparent White, XXL ($31.48)
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Item # CST2602


Packable protection from the elements.

When ominous weather looms over race day, we often see the pros requesting a modified water bottle that's been stuffed with a lightweight jacket. Mechanics simply cut a bottle's top off and drop it in the seat tube cage, providing convenient and effective storage for riders to quickly access additional layers, nutrition, and rain shells. For the Garmin-Barracuda riders choosing this option, chances are that team mechanics are outfitting those bottles with Castelli's Sottile Due Jackets.

The Sottile Due Jacket is Castelli's new lightweight barrier against the elements. It's light enough to wad up and stuff in your jersey pocket or bottle without adding any noticeable weight or bulk to your kit. The jacket is constructed from a blend of Castelli's breathable, water-, and wind-resistant fabrics, with mesh at the underarms for added breathability. The body panels of the Sottile Due are semi-transparent, so your team kit and race number stay visible through the gloomiest of weather. Designers at Castelli kept the fit of the jacket fairly trim and body-forming. This is to keep weight to a minimum and to avoid the 'garbage bag' effect caused by many ill-fitting shells. Sleeves are long to accommodate the cycling position, with a generous drop-hem to further cover your backside.

The Sottile was created with a minimal design, but the small and important details were given proper consideration. A full-length contrasting front zipper aids in both temperature regulation and on-the-bike removal. Rounded elastic banding at the cuffs and hem keep the jacket in place, a single side zipper provides access to your jersey's pockets underneath, and small reflective elements increase your visibility in low-light conditions.

The Castelli Sottile Due Jacket is available in six sizes from Small to XXX-Large and in the colors Transparent White and Yellow Fluo.

  • Breathable, wind- and water-resistant fabric
  • Semi-transparent
  • Mesh panels at underarms
  • Trim fit
  • Full-length contrast zipper
  • Side zip
  • Reflective elements

Tech Specs

[body] polyester, [underarm] polyester mesh
spring/summer, fall
1 rear pass through
Recommended Use:
Manufacturer Warranty:
1 year

Size Chart


Men's Apparel
 Small Medium Large X-Large 2X-Large 3X-Large
Chest  35.5 - 37in
(90.2 - 94.0cm)
37 - 38.5in
(94.0 - 97.8cm)
39 - 41in
(99.1 - 104.1cm)
41 - 43in
(104.1 - 109.2cm)
43 - 45in
(109.2 - 114.3cm)
45 - 47in
(114.3 - 119.4cm)
Waist 29.5 - 31.5in
(74.9 - 80.0cm)
31 - 33in
(78.7 - 83.8cm)
33 - 35.5in
(83.8 - 90.2cm)
35.5 - 37.5in
(90.2 - 95.3cm)
38.5 - 40.5in
(97.8 - 102.9cm)
41 - 43in
(104.1 - 109.2cm)
Hips 36.5 - 38.5in
(92.7 - 97.8cm)
38 - 40in
(96.5 - 101.6cm)
40 - 42in
(101.6 - 106.7cm)
42 - 44in
(106.7 - 111.8cm)
44 - 46in
(111.8 - 116.8cm)
46 - 48in
(116.8 - 121.9cm)
How to Measure:
For best results, take measurements over your underwear.
Measure under your arms, around the fullest part of your chest.
Measure around your natural waistline, keeping the tape a bit loose.
Measure around the fullest part of your body at the top of your legs.
Using pants that fit well, measure the crotch seam to the bottom of the leg.

Reviews & Community


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  • Familiarity: I returned this product before using it
  • Fit: True to size
  • Size Bought: XL

Compared with other Castelli garments I own, I was very disappointed with the overall "Quality" of this particular jacket even though the price is low in comparison.

The major issue which caused me to return the jacket unused; it was impossible to fully zip-up the jacket! The zipper's inner backing flap gets pulled into the closing mechanism at about chest high. It took three hands to make it work. I did not want to struggle with this while pedaling on my bike!

My other issue was a small (1") cut across the front of the jacket about waist high probably caused by a box knife. I would have been okay with repairing this myself due to the low price I paid for the jacket, but combined with the zipper issue, I chose to return for refund.

I Like It

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: Large

For the price, this is a good piece. It’s very light and does the job of either keeping me warm for early am starts or keeping light rain off me. As others have pointed out, it doesn’t breathe so it’s a sweat monger.

It’s thin and rolls up easily to fit in a jersey pocket. The top of the zipper is funky and need to be hacked to work without trouble.

The L fits me very slim over a tight jersey. It’s plenty long in the body and arms. Good cut for long and lean body type.


  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: True to size
  • Size Bought: large

Great for the rain, very packable, lightweight and very visible.
The zipper on the back is not a pocket, it just gave access to the maillot's pockets.

Repels showers, maximizes visibility.

  • Familiarity: I gave it as a gift but have feedback to share
  • Fit: True to size
  • Size Bought: Large

Bought it as a gift for a friend who's had major issues with visibility on the road (he was recently hit!). He loves the jacket for its super-bright look and rain-shedding performance.

good but not so breathable

  • Familiarity: I've put it through the wringer

Pro: Very packable. My go to jacket.
Pro: Good water reppellancy
Pro: Warm: use it as shell in winter in cold weather, 30's and 40's. More warm than one might expect, probably because it isn't very breathable.
Con: Not very breathable.

Avg. ride time: 3h 14m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Not impressed.

  • Familiarity: I've used it several times
  • Fit: Runs small
  • Size Bought: XL

First Castelli item I buy, was expecting so much more. Terrible finish quality.

Keeps you warm and repels water

  • Familiarity: I've put it through the wringer

This jacket does what it is intended to do. It repels water and keeps you warm in chilly days. I ride at 5-15 centigrade degrees with a 50% chance of rain most of the time. This jacket keeps me cozy and dry. It is light and folds small. I like the zippers to get access to the back pockets of my jersey. The zipper bites the fabric at the bottom of the neck (slight design problem). I got one in white, and it is totally transparent.

Poor quality control. Seemingly poor RMA

    I ordered the first one and the collar stitching already had come apart before I had received it. The replacetment will not zip all the way up.

    I have spent 45 minutes trying to get crappy internet explorer to print the RMA with out success.

    Also Competitive Cyclist said they would pay for the return but both slips want me to pay $6.99.

    I had bought some other stuff since then, but WOW what a hassle to get the returns taken care of.

    I do like the size large Louis Garneau Corsa 2 bibs so far. Fit and quality for my 6'1" 180 pound frame is good.

    Some of the people will tell you anything to make a sale. I say this because I have been lied to about products I have bought in the past. I was told the pad in the Demarchi bibs was the exact same as the Assos, which was not true. The Pad is very good though.

    I DO NOT RECOMMEND the jacket.

    Avg. ride time: 1h 38m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Great, Sometimes

    • Familiarity: I've used it several times

    I love the idea & packability of this jacket, the actual execution not as much. It's great to stuff in a jersey pocket & barely notice as you're climbing along then throw on over a summit for a long decent. However in changeable conditions or once you start working up a sweat it's a bit like a greenhouse inside. Once the inner fabric gets moisture on it the fabric starts sticking to your skin making removal difficult while riding. The tiny zipper doesn't make things easy either.

    I wanted to love it, but find myself reaching for it only really in good weather with a chilly decent ahead of me.

    Avg. ride time: 2h 10m per week
    • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

    Zipper was disappointing

    • Familiarity: I returned this product before using it

    I really wanted a morning ride shell I could shove in my jersey pocket. This jacket has a large flap at the top to ensure a good seal from wind/rain, which is great. BUT, I can't get the dang thing to zip without the big flap getting pulled into the zipper.

    Love the jacket, but zipper isn't working for me.

    I'm opting for a castelli vest and warmers instead.

    first thoughts

    • Familiarity: I've used it once or twice and have initial impressions

    great visibility, its more think and see through than i thought it would be, but just as high viz. I got the small even though i wear medium for Castelli jersey and bibs, it was the right call.

    The Bad: no bag! I have a castelli wind vest from lats year and it came with a little pouch you could put it in. that would have been perfect for this, totally needs it.