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Castelli GPM Full-Zip Long Sleeve Jersey

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Item # CST0651

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Item # CST0651


With more subdued styling than some of the Italian company's other offerings, the Castelli GPM Full Zip Long Sleeve Jersey is the perfect choice for cooler days when you want to look and feel comfortable.

Constructed in solid colors with just a touch of grey around the wrists and neck, the GPM Jersey uses Castelli's popular Warmer fabric to produce a long sleeve jersey that insulates yet breathes to allow moisture to evaporate -- you'll stay warm and dry.

The GPM Long Sleeve Jersey comes with a full camlock zipper that stays flat when the zipper head is down as well as an elastic gripper around the back of the waist to keep the jersey from riding up while riding. Three rear pockets are spacious enough to hold spare tubes, gloves, and food, while a small zippered side pocket is perfect for your keys. Two rear reflective tabs complete the package, offering a bit of extra visibility for riding in low-light conditions.

The Castelli GPM Full Zip Long Sleeve Jersey is available in five solid colors -- Black, Cyan, Green, Red, and White. It has subtle wrist and neck detailing and an embossed tone-on-tone Castelli scorpion logo on the jersey's left shoulder. The GPM Jersey comes in six sizes from Small through XXX-Large. It's designed to be form-fitting as the technical fabrics used to construct the jersey work best when in close contact with your body. Be sure to check the sizing chart to ensure proper fit.

  • Warmer fabric provides warmth and moisture wicking to keep you comfortable
  • Silicone grippers keep the jersey in place when you're hammering
  • Three rear pockets and an additional zippered key pocket securely stow all your essentials

Tech Specs

[shell], [backing]
Recommended Use:
fall training, racing

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Here's what others have to say...


great mid-weight jersey

  • Familiarity:I've used it several times

I am 5'10" and 165-lbs and bought the XL. the fit is perfect for me (I like a little extra room to put a thin base layer under it). I bought both the black and the red (the picture shows more of an orange, but the color of the jersey I received is the classic red). similar to other reviews, I would consider this jersey functional into the 45-50 degree range, but needing a base layer to ride down into the 30-40 degree range. overall construction of the jersey is very high quality with both materials and fit feeling very solid. at the sale price, this is a great value for riding cooler spring/fall days, and it does well when paired with an incremental base layer for colder days.

Avg. ride time: 29h 48m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

Keeps me pretty warm.

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

I got this awhile ago to help keep me motivated to keep riding in the cold weather. I've used it twice so far. Last weekend went for a morning saturday ride around 10am and it was around 45-50 degrees, it kept me nice and warm the whole ride and I didn't feel cold at all. felt nice and warm.

I rode last night and it got down to 30 degrees. It was chilly, I wore a base layer underneath and it helped. It kept me warm but not SUPER warm, the base layer helped well. The fit is great on me I'm 5'11 around 180lbs. I'd buy it again.

What size did you buy?

I guess that would help. I bought a Large.

I'm confused. I would think (at 5'11"/180lbs) that a XL would be the right size in Castelli. Any thoughts anyone?

It's a TIGHT fit, which I like so maybe some would like an XL vs. a Large...

Avg. ride time: 4h 51m per week
  • Average ride time is based on Strava activity over the last 3 months. Give your reviews credibility by connecting your account.

To any Floridians out there. I'm relatively...

To any Floridians out there. I'm relatively new to road cycling and I don't have any cold weather jerseys. Would this be good for winter weather here? Where it's about 50-60 degrees in the morning. If not, what are some good jerseys for around that temp? Thanks!

Best Answer

I am not from Florida, but I can tell you that you have to consider two things when going out in a ride regardless of time of the year other than temperature. Wind and the Sun. If it is windy you will feel a lot colder and vice versa. If the Sun is out then you can start toasting depending on the wind and temp. A base layer and a long sleeve jersey should do fine for a 50-60 weather. I got out for a long ride the other day and it was around the 50s but since the Sun was out and not much wind with climbs to come I had to ditch my softshell (I know, but sometimes temps drop really quick in the Valley). I got through my ride with a longsleeve baselayer and a regular cycling jersey just fine.


Very comfortable jersey

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

Very comfortable jersey. A little small for my.


Excellent Winter Jersey

    I live in Massachusetts so the winters are pretty intense. I searched the site for a thermal jersey and only Louis Garneau has long sleeve jerseys that are labeled as "thermal". Castelli's Warmer fabric is Castellis warmest fabric evidently and IS thermal. Under 40 degrees you'll need a windproof shell but this jersey performs very well at keeping you insulated. Don't jump up too many sizes because the thermal fabric needs to be in close contact with your skin. I'm 6'3 230lbs. and wear an XL.


    OK for its price.

      Jersey feels warm and comfortable. XL fits well (6ft tall), but I wish it were a bit more form-fitted. The quality of the stitching seemed bad at first glance, but so far it is holding up.


      Love it!

        Love this jersey! The inside seems to have a light fleece that I really like. When I wear a long sleeve jersey I like it a little warmer. This jersey is it! Quality logos, zipper and the colors are eye catchers.


        Comfy, but zipper seemed whack...

          I bought these and RMA'd them after deciding I wasn't crazy about the zipper and the jersey itself. I purchased the large ones in red. The zipper construction seemed cheap and wasn't solid like I've seen and felt in other products including Castelli.

          As for the fit, Im 5'10", 155lbs, 32-33" waist with an arm length of 32/33. They seemed to be a bit long in the arms. I believe they would offer plenty of arm coverage for when you're hammering in the drops. The fleece material inside seems really comfortable and the jersey otherwise felt snug.

          Just because I wasn't crazy about it doesn't mean you will be too. I love Castelli products but this one just wasn't for me. Hope this helps.

          What size did you get given your measurements?


          Castelli GPM Full-Zip Jersey - Long-Sleeve - Men's

            This jersey has a great fit when you finally settle on the right size. The sizing chart suggested I was within the margins of a medium. It arrived and was way too small. The large fits me perfectly. So take the recommendation of going up a size seriously. I'm a medium in American sizes and a large in Euro sizes. That has been consistent across a number of brands, including Castelli, whether it's a bib short, jersey or jacket. The fit of this jersey is trim but comfortable. The neck and cuffs fit snug and keep out drafts. It has a nice soft feel due to the fleece inside. Very comfortable to cycle in when it gets down below 60, say. Generally, Castelli's weakest element of their garments are their zippers. This one works well so far, but it doesn't appear to have gotten any special attention from the Design Dept. I got the cool superman blue with red trim. A relatively understated design for Castelli, which I like. One of the few jersey's of theirs I feel comfortable wearing in public.

            In my experience the pull tab broke the first ride on this jersey so i took a rubber gasket and looped it through for something to pull. Also the bottom, when taking it off is a bit weak as it separates before the zipper is ejected from the slot...