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Castelli Sanremo 3.0 Speed Suit - Men's

Sale $199.97 $399.95 50% off

Item # CST005G

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  • Black/White, M ($199.97)
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Item # CST005G

Our hero.

We've written of Castelli's Aero Race 5.0 as something of a villain to the competition from other manufacturers, and it's fair to say that the Body Paint shorts are equally threatening to inferior kit. Combine the two, though, and you get the super-hero worthy San Remo 3.0 Speed Suit. Even Castelli seems in awe of the San Remo, noting that it "may be the fastest bit of kit ever invented for road racing." The suit is also also capable of speaking for itself, with such victories as Vansummeren's win in Roubaix charting a course of development that culminates today with the San Remo 3.0.

The top half of this dynamic duo is the Aero Race 5.0, which incorporates two materials: a front panel of Velocity dry and back and sleeve panels of 3D fabric. Velocity Dry is quick-drying and boasts a low weight and a tightly knit weave to manage laminar airflow over the body. 3D Fabric adds to these benefits with a dimpled, wind-shedding texture that also expands the fibers' effective surface area without adding mass, allowing for increased wicking and an even faster evaporation. A girdle of limited-stretch material keeps the three rear pockets well-behaved, even while they're loaded down with enough spare tubes to see you over the stones of the Hell of the North.

The suit's bottom half is really just a bib-free version of the Body Paint Shorts, which use a single piece of ergonomically-shaped compressive fabric for a naturally supportive fit. This smooth, seamless fit is complemented with dimples that, like certain carbon wheels, induce airflow separation to reduce drag. The incorporation of the Body Paint platform also means one of our features comes along for the ride: the Giro3 integrated leg grippers omit pinching elastics in favor of a gently compressive, five-centimeter band of grip that lays perfectly flat to eliminate any wind-catching transitions from skin to shorts.

The suit is finished with Castelli's obsessively redesigned Progetto X2 Air Seat Pad. Since Castelli had it pretty right to begin with, there wasn't much more than tweaking to do to this beloved chamois, but the Italian perfectionists couldn't resist. They've added perforations to the foam and viscous comfort layers to help ventilate and cool by allowing air to flow directly onto the four-way stretch, bacteriostatic surface fabric. With these subtle updates, the discomforts of the road stand as much chance of throwing you off your game as laminar drag.

  • Aero Race 5.0 top half
  • Body Paint shorts
  • Giro 3 leg grippers
  • Progetto X2 Air Seat Pad
  • Aerodynamic surface dimpling

Tech Specs

[top front] Velocity Dry, [top back and sleeves] 3D, [bottom] Body Paint Lycra
aero race
3 rear
Recommended Use:
road, cyclocross
Manufacturer Warranty:
30 days

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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Here's what others have to say...

what is inseam length?

Hi Mitch! Here are all the size inseams.

Small :31.9in (81cm)

Medium: 32.3in (82cm)

Large: 32.7in (83cm)

XLarge: 33.1in (84cm)

XXlarge: 33.5in (85cm)


Fits like a glove.

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

The San Remo suit fit perfectly. I used the chest size for my 42" chest and ordered the XXL and it was perfect. Castelli does run small as I am usually XL in Santini . The suits just feels fast. I don't know if it's psychological or not, but it feels great against the skin and just makes you want to go fast. The pockets are perfect especially when loaded, none of the contents move at all. The suit definitely hits all marks with me and is a keeper.



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

Got this kit for a road race I knew would be fast, and the lack of drag over a regular castelli kit is amazing.

Fit is great when on the bike but you will feel a little silly when standing around. Normally I wear a small castelli jersey and shorts but I got this in a medium, and I'm glad I did. Runs super small like any skin suit, but it is FAST.

Pockets work well, although I wish they would place them higher up in the back so your stuff rests on your back, not the top of your butt. (I wish they would do this with all their jerseys) .

Only other gripe is that unlike the Thermosuit, where they used bibs without straps, they stitched bodypaint "shorts" to the top, so there is a leftover waistband that doesn't need to be there at the front and somewhat get's bunched up and a little tight. My only reason for 4 stars.

Overall love it, my new go-to race kit.

Unanswered Question

Need your advice on fit for this product. I'm very tall (long inseam bigger than a 3xl on this chart) but very narrow upper body (pretty lanky about a size small on this chart) think similar to Ryder Hesjedal kind of build. Long and Lanky. What size should I go for?

Avg. ride time: 3h 8m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Great piece of kit

  • Familiarity:I've put it through the wringer

Sticker shock? Sure, but I think you'll be MORE shocked at how amazing a functional skin suit works. Yes, FUNCTIONAL. The addition of pockets makes this a piece you can wear for more than just a TT. The lack of shoulder straps gives you a sense of "freedom" as you ride. It fits tight and gives you fantastic ventilation. The bottom is a modified bodypaint shorts so they have a very supple pad. A word of warning on the pad, it does not fit everyone. The pad can be uncomfortable to some depending on how well you fit Castelli products in general, but by in large this kit will be great. My only gripe with this piece is that it holds very poorly to wear and tear. Understandably this is a "race-day" piece, and as such you should approach this investment as one, but inner thigh material tends to fray very quickly (mine started only about 100 miles in). My thighs are thicker and so the inner portion tends to rub against the nose of the saddle. So if you buy this, keep your eyes open for premature wear. The free-aero bibs will last you longer....