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Castelli Senza Jacket

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Item # CST002H

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Item # CST002H

All function.

Senza translates to "without," a theme that Castelli really ran with while designing the Senza Jacket. Being called Senza doesn't mean that it's featureless, though. It combines cold-weather protection and a functional storage capacity in a race-fit jacket — the "without" theme refers to its lack of extraneous frills. It's a simple, effective way to enjoy the legendary function and styling of a Castelli jacket without any unnecessary embellishments.

The Senza is made from Windstopper X-Fast material from the venerable manufacturer Gore-Tex, which is the go-to destination for manufacturers who want to beat the wind. Wind-resistance is expressed in terms of CFM, which determines permeability by measuring the volume of air that can pass through a given material in one minute. Since all fabrics branded with the Windstopper stop sign logo either beat or exceed the windproof rating of 1.0 CFM, they are all literally windproof. This windproof layer is sandwiched between a protective outer layer, which has been given a DWR treatment for water resistance, and a fleecy, insulating lining.

The jacket features Castelli's bike-specific fit, which may feel awkward and restrictive while you're on foot, but which conforms to your chest, stomach, and arms while allowing your shoulders to reach forward while you're in the saddle. Its aesthetic design is Castelli at its finest: large panels of solid colors with subtly understated contrasting details. Castelli recommends the Senza for temperatures between 32 and 50 degrees Fahrenheit.

It has a flip-up thermal collar for extreme conditions or when you don't want to catch a chill on your neck, a zippered chest pocket, and a zippered rear pocket with reflective webbing. It also has the standard cycling top inclusions: a full-length front zipper, three open rear pockets, and a microfiber grip on the hem to keep the jacket where it's supposed to be.

The Castelli Senza Jacket is available in six sizes ranging from Small to XXX-Large in the colors Black, Drive Blue, Moonlight Blue, and Red.

Tech Specs

Windstopper X-Fast
Windproof Rating:
<1.0 cfm
fall, winter, spring
1 zippered chest, 1 rear zippered, 3 rear
Claimed Weight:
size large 469 g
Recommended Use:
cold-weather 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.

Reviews & Community


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Not satisfied with the quality

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

Size well mostly true to size but I would say a bit tight. It might depend on the size of your waist and stomatch. I bought L size. I'm 5'84/178cm and 176 lbs/80KG 35~36 inch weist/88~91
I bought it just because it was Castelli and liked the designed so much. Not sure if all Senza Jackets are made in Macau. I only wore less than 10 times and didn't really handle it rough. Nevertheless some places near the zipper and back pockets are already torn a bit and it still continues. Very disappointing. Other than that I think it's a good product. I used it around 5 ~ 15 degrees celcius.
Oh and make sure not to wash it hard on washing machine.

Hi team!
How are you doing?
I just wondering which model of jacket purchase, and i am trying to decide between senza and alpha. Temperature here in Chile is around 32 sometimes in the morning and 55 in the day, i just want not freeze in the mornings or later after work (45 degrees) and right now only have budget for one jacket.
Many Thanks.

Avg. ride time: 5m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Great cold weather Jacket

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

I've worn this jacket on rainy 40 degree rides and felt warm and dry. I use it for winter fatbiking and spring gravel rides. Very visible and I feel good in it. I wish I had the next level for warmer rides. The XL is perfect for my body type at 6-1 165lbs.

Worth the money!

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

I brought this jacket back in March but didn't get a chance to wear it until today...45 degree with 20mph wind gust. Man did the jacket did everything in the description! I wore a long sleeve jersey underneath the Senza jacket and it kept me warm the whole 42 mile ride. In fact, I was a bit warm as I started to sweat. I brought a size bigger(large) on the recommendation of the Backcountry staff. It was just right as it allowed room for my long sleeve jersey. It wasn't bulky as I thought it would be since it has a fleece lining. The pockets in the back have as much room as a jersey. Plus it has a side zipper pocket which is a bonus. This is a great investment.

Wonderful Jacket

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

Great Jacket, Very Happy with the Buy. I have rode with it in temps down to 38 degrees (arm warmers underneath) without noticing the temps. I wear it a ton on my commute to work, Blocks the wind, Blocks the Cold. Helped me finish Mt. Graham without freezing to death (dropped down to 40 at the top) This Jacket replaced my Bontriger that i passed on to my wife. Would buy it again.

Wonderful Jacket

Very good Fall / Spring jacket

  • Fit: Runs small

I have been wearing this jacket this past winter and it has worked very well. I am 5' 8" and I bought the XL which fits perfect. Temperatures under 40 degrees are probably too cold for this jacket, but anywhere between 43 - 50 is perfect.


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

Exactly what I was after. I use it for commuting to work and throw in my pack for the windy crests in the foothills. Cut is perfect for biking. As others have said feels and looks a little funny wearing off the bike, your ment to be leaning forward w arms extended. Falls into place like a puzzle piece on the bike. Warmth, I would say by itself down to 40, light base freezing, and winter base 20. less than 20 I'll prob switch to something I can wear a mid layer. 55 degrees your going to start sweating w light base. For what it's intended for, perfect.

Exceeded Expectations!!!

  • Familiarity: I've used it several times

I love this jacket. I wear it bareback and the fit size is just like my Castelli race jerseys. 32-45 degrees and I don't feel the cold or the wind. Back pockets are easily accessible with gloves. Absolutely love it and looks stylish. Form & Function can happen together.

Castelli Senza

  • Fit: Runs small
  • Size Bought: XL

My third Castelli jacket. The Senza is very similar to the Espresso w/o all the needless zipper/vents & extra $$. I love them all. They all fit the same...great. I'm 5'11" 160 /b with 42" chest, 30" waist. My dress shirt size is 16" 34/35 fitted shirt. If you have any muscle on your upper body, you'll want to size up. I'm typically a large, but an extra large in Castelli jackets. Just enough room for a compression fit long sleeve base layer.
Senza for under 45 F
Mortirolo 45 - 55 F
Transparente 55 F and up

Is good as advertised

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

My first ride with my new Senza was an early morning ride at 25 degrees. With a long sleeve thermal under layer and a jersey, I was more than comfortable. My second ride at 34 degrees with a jersey and thin under garment was also quite comfortable. I am 6'0

Avg. ride time: 5h 39m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

I'm trying to decide between the Senza and the Espresso 3. They look like they're intended for the same riding conditions. Can anyone tell me how they are similar and different?

Best Answer


Both jackets are made for similar riding conditions. They both use a Windstopper X-Fast membrane for wind and water proctection. You will see the main difference in the vents. The Senza has no vents but the Espresso has vents in the wrists and torso. This will allow you to manage your comfort with more ease and precision than just opening the jacket. I worked for Gore-Tex, Windstopper and Gore Bike Wear before heading to Backcountry. Please feel free to contact me with any questions.


800-409-4502 ext4696


Avg. ride time: 4h 23m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Great Jacket

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

Warm - I've ridden in it down to 35 and was comfortable. Fits good. Snug like all castelli stuff. I got a large - normally wear a medium jersey and the jacket fits well with a base layer on. Feels funny when you are off the bike - but in a riding position it's very comfortable.

Great Jacket

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

This is a great jacket for winter riding. I've had it out several times, and with a light jersey underneath, it is perfect from low 30's to about mid 40's.

Sizing is typical of what you would expect from Castelli, and runs true to size to other Castelli gear than I wear. I ordered a large, and at 6' and 165 pounds, the fit is just right, particularly in the riding position. Looks great too!

Lee, do you think I can wear a MEDIUM at 5'6" 40" chest & 158lbs?


Thanks Chris D. I now own two Castelli jackets (large) and they fit like a glove. Also a pair of Nanoflex bib-tights (medium) which is per the size chart and they are great too! Love Castelli gear/ware.

Rule of thumb for Castelli clothing (imop) is your shirt size + 1. I don't have this product, but an older version and I'm typically a medium and a large fits me perfectly

Once you find you "Castelli Size", I've discovered that it mostly holds from product to product, but for their more "race fit" items, you absolutely need to go up a size. I'm 6'3" 185lbs and Large works pretty well for me most of the time in both jackets and bib shorts + tights. If you are tall, you will need size large to cover the length of your limbs, minimally.

(In some typical men's street clothing, I am a medium (not because I have shrunk but because American sizes have grown over my lifetime to accommodate bigger girths.)

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

Warm and snug

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

It fits more snug than my castelli jerseys short and long. I use xl, however once in the riding position the arms loosen up and it feels great. It's very warm and the wind blocker does its job well. I usually use two long sleeve jerseys in 50deg weather and I'm just right , but all I had under this jacket was a short sleeve summer jersey and I was sweating too much, had to ride with zipper down to not over heat. Looks great off the bike too but I think id have to size up to be comfortable or maybe with time it might stretch a bit.