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Castelli Costante Jersey - Men's
Sale $64.48 - $65.00 $149.95 57% Off

Item # CST00DH

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  • Mirage/Luna Grey, XL ($64.48)
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Item # CST00DH


As He Would Have It.

According to Castelli lore, the one and only Costante Girardengo was, at one point in his vast cycling career, clothed by Vittore Gianni—who incidentally would be the foundation behind Castelli's creation. At any rate, if you haven't already inferred, the Costante Jersey pays homage to the late Giradengo with its merino wool fabric and timeless silhouette.

More specifically, the Costante features a uniquely crafted blend of merino wool and nylon. Castelli has decidedly called this fabric Nuyarn since the virgin wool is wrapped around a nylon core. This design reduces the chance of shrinking and prevents it from twisting around your body in an unsavory way.

If you're unfamiliar with the benefits of a merino wool fabric, allow us to give you a brief introduction. Merino wool manages moisture, maintains breathability, and provides subtle warmth, but it's also odor-resistant for enhanced performance, so you're able to transition from the saddle to the café in stride. Meanwhile, the nylon component of this fabric lends added durability and helps expedite the drying process. And while the merino wool and tribute inspiration might be enough to justify purchasing the Costante, the three rear pockets (complete with button closure), lightweight construction, and minimalist design only bolster its insatiable appeal.

  • Pay homage to the greats with this jersey
  • Merino wool blend lends adaptive moisture management
  • Nylon component assures ample durability
  • No-twist design lends a comfortable fit
  • Three rear pockets provide respite for necessities

Tech Specs

85% Nuyarn wool, 15% nylon
spring, fall
3 rear
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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Good middle layer: cold weather racing

  • Familiarity: I've put it through the wringer
  • Fit: Runs small
  • Size Bought: Med

With a silk base layer and this thin merino jersey, high output efforts won't leave you bathed in sweat under that windproof Castelli outer layer. If you're looking for wind proofing, look elsewhere. Speaking of the wringer, on my very first ride I had the "privilege" of testing durability as I treated a slightly leafy street as a hairpin cyclocross turn and leaned the bike over. Ouch. Minimal damage to the shoulder that hit and the pocket that held my then crushed phone. Soooo, not suitable as MTB downhill armor. Several CX races show fitness for that purpose.

A Wardrobe Item

  • Familiarity: I returned this product before using it
  • Fit: Runs small

This is the kind of jersey you wear to the local coffee shop on a cool morning to meet up with friends and mix with the crowd. Then, once you've finished your hot brew, the group rolls off for a brisk ride, while you turn around and head home to inch the thermostat up a degree or two and crawl back into bed. It looked good but didn't keep you warm.

It's actually a pretty cool jersey. I even slipped it on and fancied myself a retro bad-ass for a moment in the mirror. But it's also like one of those reasonably priced cashmere and cotton blend V-neck sweaters you buy at a Gap-like clothier for casual work attire. Warm and durable enough for a cubicle. But you wouldn't want to wear it into the mountains.

True to Castelli sizing. Go up one.

I don't really see the utility in owning a thin, long-sleeved garment like this. I have nothing against cycling dandies. It's kind of a cool element of cycling. But if this jersey and a base layer was all I had on the north side of the climb, I think I'd be shivering scary by the time I popped out into the sun again. It's a neat design. Although I'm doubtful about its long-term durability.

However, if your local coffee shop has a small locker room where you could keep a change of gear ...

Simple and smart

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

Great jersey! Comfy, great looking, lean fit, order one size up ......euro fit!