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Castelli Trasparente 4 Long-Sleeve Jersey - Men's
Sale $110.47 - $169.95 $

Item # CST00IO

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  • Anthracite/Sky Blue, S ($110.47)
  • Anthracite/Sky Blue, M ($110.47)
  • Anthracite/Sky Blue, L ($110.47)
  • Anthracite/Sky Blue, XL ($110.47)
  • Light Black/Black, S ($169.95)
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  • Light Black/Black, L ($169.95)
  • Light Black/Black, XL ($169.95)
  • Light Black/Black, XXL ($169.95)
  • Light Black/Black, 3XL ($169.95)
  • Light Black/Yellow Fluo, S ($169.95)
  • Light Black/Yellow Fluo, M ($169.95)
  • Light Black/Yellow Fluo, L ($169.95)
  • Light Black/Yellow Fluo, XL ($169.95)
  • Light Black/Yellow Fluo, XXL ($169.95)
  • Light Black/Yellow Fluo, 3XL ($169.95)
  • Red/Black, M ($110.47)
  • Red/Black, L ($110.47)
  • Red/Black, XL ($110.47)
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Item # CST00IO


Protection that blurs into the background.

Taking its name from the Italian word for transparent, the Castelli Men's Trasparente 4 Long-Sleeve Jersey blurs into the background on chilly training rides without the bulkiness of a protective riding jacket. The Trasparente 4 occupies the middle ground between jacket and jersey, making it a go-to choice for spring and autumn rides when a jacket is overkill, yet a regular jersey leaves you inadequately prepared for blustery conditions and oncoming showers.

It's constructed with Gore Windstopper X-Lite Plus along the front panel and sleeves, which provides full windproof protection and repels oncoming showers from soaking you to the core. By placing a windproof fabric along the leading edges, you'll remain insulated from chilly breezes when you're riding along at a brisk cadence. Castelli then places breathable thermal fabric along the back panel to exhaust built-up heat and reduce the jersey's likelihood of soaking up perspiration.

  • Minimalist feel of a jersey, wind-blocking protection of jacket
  • Gore Windstopper X-Lite Plus blocks chilly breezes, repels showers
  • Breathable thermal fabric at backside for temperature regulation
  • Lightweight, form-fitting design provides "barely there" feel
  • Full-length Vislon zip for smooth operation and durability
  • Zippered chest pocket, three rear pockets for ample storage
  • Reflective details for visibility in low-light conditions
  • Jacquard internal elastic waist for a secure fit

Tech Specs

[front and sleeves] Gore Windstopper X-Lite Plus, [rear] breathable thermal fabric
full-length YKK Vislon zipper
spring, fall
[front] chest (zip), [rear] 3 standard rear
back detailing
Recommended Use:
road cycling
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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Avg. ride time: 2h 25m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Great for cool weather

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

This is perfect for those cooler days from about 40-60F, and I’ve been wearing it during our variable “shoulder season” where a ride starts around 38F and finishes around 60F. Once I’m warmed up this jersey works great in the cooler end of that range, keeping things warm without trapping heat and moisture, and a couple inches of opening the collar and all’s well as the ride finishes and temps have climbed. I wear the Castilli “fishnet” undershirt under this jersey and its the perfect cool weather combo.

Like all things Castelli sizing runs small, but the 2XL was perfect for me

Really Good Fit

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

Bought the XXL. I’m 6ft, 208lbs and it fits perfect with a long sleeve base layer. Longer neckline is appreciated in windy conditions. Love the clutch front pocket. Enjoyable at 40-55 degrees on the East Coast!

Castelli style

  • Fit: True to size
  • Size Bought: Large

I purchased the lime green jersey for its high profile visibility. The garment has a high collar and the gore windstopper material is perfect for those cool windy will not be disappointed with this purchase.