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Castelli Trasparente 3 Wind Full-Zip Jersey - Long Sleeve - Men's


Item # CST008S

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Item # CST008S


Castelli introduced the men's long-sleeve Trasparente 3 Wind Full-Zip Jersey with a pretty outlandish claim. "It will make you want to do intervals in January," Castelli promises us, which is a claim we take with a grain of salt. Nobody wants to do intervals in January, but some of us don't have a choice. For the riders at Cannondale-Garmin who use the Trasparente 3 for off-season training, the obligation is professional; for us, though, the obligation is one of pride. If we don't hit those base mile numbers, we won't have the form to hit our early season goals.

The jersey features two materials: Windstopper X-Lite material on the front and sleeves and Warmer fabric across the back. The Windstopper protects a cyclist's engine by blocking the wind generated while generating watts, and it adds a touch of water resistance to fend off winter road spray. The Warmer fabric on the back is thermally insulating, but it breathes in order to keep your engine from overheating. Too hot, and you sweat; sweat, and you're eventually riding in a sheen of frigid, clammy moisture. By regulating temperature and breathing, the Warmer fabric prevents this. Both fabrics are also stretchy enough that Castelli cut the Trasparente 3 to fit like a jersey, not a flapping winter jacket.

The Trasparente is finished with a full-length Camlock zipper and a Jacquard elastic to keep the waist in place. The usual complement of three rear pockets is supplemented by a more convenient, protected chest pocket, and reflective detailing on the rear hem presents an attention-grabbing shine to traffic approaching from behind in the kind of inclement conditions where the Trasparente's protective materials will be most needed.

Tech Specs

[front and sleeves] Windstopper X-Lite, [back] Warmer
full-length Camlock
3 rear, 1 zip chest
Recommended Use:
Manufacturer Warranty:
1 year

Size chart


Men's Apparel
Chest 36.2in
Waist 31.5in
Hip 37in
Inseam 31.9in
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.

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Perfect companion...

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: Small

I grabbed this the same time I grabbed a Gabba. Together, they are so warm - while the Trasparente 3 paired with a jersey and arm warmers, has been my go-to mix lately here in Chicago. The high neck cuff is great, and once your body is warmed up - this is a comfy LS jersey.

a sweet bit of kit

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: Small

This is easily the best Castelli article i have owned. Is it a winter jersey or a light jacket? I wear it as a winter jersey -it wears like one- and it is perfect for me from high 30s to low 50s. Since i live in Florida it pretty much has me covered through the winter months. I'm 5'6" and 140lbs and the small fits perfectly. It is snug but not uncomfortable. I can get a thin base layer under it but not a normal summer jersey. The quality of the fabric, zipper, and stiching is great. This is an A+ product.

Best Winter Kit Ever

  • Familiarity: I've put it through the wringer
  • Fit: True to size

I loved it so much, I bought a second jacket. The fit and finish on this product is outstanding. I ride with this jacket in temps as high as 50 degrees (no layers) down to upper 20's. (with layers). Warm without being bulky. It breaths well, repels water and has a form fit which is great for all around use. I use it on gravel grinds and road riding. This is my Go To kit for late Fall and Winter riding.

Windstopper is the Bomb!

  • Familiarity: I've put it through the wringer
  • Fit: True to size
  • Size Bought: XL

I tend to always get cold riding-- be it needing a windvest, or toe-warmers-- pretty-much all the time! This Trasparente 3 is an amazing product. I can wear it with a wicking undertop on a cool morning or with a long-sleeve one clear up until its cold enough for a traditional jacket. Not needing to wear a windvest is a true revelation and a testament to this miracle fabric. Its warm, windproof and light. I wear an XL in anything Castelli (being 6'1", 160 lbs) and its no different with this jersey.
High-end cycling apparel can be an expensive experiment -- especially by mail-order. But this Transparente 3 is a true revelation. You won't regret it-

My favorite Castelli top

  • Familiarity: I've used it several times
  • Fit: True to size

I'm 5'10', 155, 39''-40'' chest with thicker arms than most cyclists. I bought the large, and I'm glad I did because this jacket/jersey fits slightly larger in the shoulders, chest, and along the arms than my Gabba jacket. I was worried I'd have to go up to XL but I didn't. This gives me enough room for a good long-sleeve base layer--or even 2--for cold weather riding. And the chest pocket is so useful! I can keep my music/phone right where I really want it.

Avg. ride time: 3h 22m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Surpassed my expectations

  • Familiarity: I've used it once or twice and have initial impressions
  • Fit: Runs small
  • Size Bought: Large

I was worried about sizing: with base layer, without vs. summer or LS jersey... Fit is snug, but forgiving - I'm 5'9, 170lbs, 38 in suit jacket size, prob 5lbs off my perfect weight, mostly wear Medium and this thing in Large fit like a glove over a light base, summer and LS jerseys.

On a 3 hour ride at 38-40F with a summer jersey under it I was cozy.

No silicone gripper but the jersey stayed on my bum without riding up.

Has anyone been able to compare this with the Alpha jersey? They both look very similar in what they accomplish.

Really good question. They are both light jackets that cover the same approx. temp range. Castelli officially rates the Alpha for use in 46-59° F weather. And the Trasparente for 50-64° F.

The main difference is that the Gore fabrics used in the Alpha are treated with a "nano" silicon DWR coating and thus the Alpha is designed more for use in misty/drizzly/light rain conditions. And for climbing in these conditions (hence the internal vest; though personally I still prefer the Tras for climbing -at least in the dry- because it breathes better).

The Trasparente is an *awesome* light jacket that is made with slightly less water-resistant textiles (that breathe better) and is designed for riding hard in cool/dry conditions in the 50 to 65° range. It is arguably -the- benchmark jacket in the sport for that purpose.

Two great jackets. Just meant for slightly different conditions.

Perfect for mild-cold riding

  • Familiarity: I've used it several times
  • Fit: True to size
  • Size Bought: Medium

I have been really quite impressed with this piece. It is very comfortable, and provides for a very comfortable ride in the 35-50ish deg range. Wearing a baselayer underneath should drop that range another 10 deg, or so, although I have yet to really experiment with that. In my experience, around 40 degrees is the perfect temperature to be comfortable when riding, so long as you can deal with wind. The Windstopper membrane in this piece shields you from wind completely, making it a non-factor, and thus giving way to a perfect comfort-temperature ride.

This piece is sized like usual bikewear, so expect it to be tight. That said, I did not need to size down from my regular medium, however I think a Large would work for me as well. Whether or not to size down depends on how you prefer your fit.

The third version is better than ever!

  • Fit: Runs small

The Trasparente from Castelli is one of the best light jackets made for Fall and Spring riding. Period.

This is not a jersey. This a light jacket intended for riding hard in cool, dry weather. This jacket is extremely functional and versatile across the 45/50 to 65° zone.

Lots of attention to detail here: Gore "Windstopper X-Lite" textile is wind-proof yet breathes well and is stretchy (aerodynamic) and doesn't flap in the wind, at all. The cam-lock zipper is quality. And the zipper grip is designed to work well with gloved hands.

But after using this jacket for 3 years, I think the "warmer" textile used on the back of this jacket (and the back of the arms) is what raises the Trasparente to the legion of brilliant. This textile breathes -great- and thus allows you to ride hard (and thus sweat) without getting steamy and clammy (and eventually cold) during hard riding and climbing. Ride hard in 45 ish to 60° (depending upon your baselayer system) and you will stay warm, dry, and comfortable. This is Brilliant!

CONS: None.

This is one of the very BEST items that Castelli makes; and that is saying something. Can I give it 6 stars?

Note: The Trasparente matches perfectly with Castelli's "lightness" full finger gloves.

FIT: Size up +1 with Castelli. Always. ... I'm 5'10 185, the XL fits me quite snug in the torso (I could loose 15 lbs) with plenty of arm length & perfect body length. This is part of Castelli's "Rosso Corsa" (race) collection designed for fit/athletic riders; thus it is meant to fit snug and aerodynamic.