Need a jacket for the shoulder seasons? This jacket has you covered. Need a warm jersey for the days that it’s just too warm to hide your arms in a jacket but too cold to use your summer jersey? This jacket has you covered. What about those days when the ride starts cold but gets progressively warmer? This jacket has you covered!

The thing I love most about this jacket is the versatility that it gives me to ride in so many different conditions. I’m not afraid to take it out in a bit of rain or some chilly wind. The RoS (Rain or Shine) tech they have in it makes it ideal to ride in almost any weather if you have the right layers to go with it. I found that for me, this jacket was ideal with just a baselayer in the 45-55° range with the sleeves on. I could probably wear it up to maybe 60-65° if I needed to without the sleeves, although it hasn’t been warm enough to try that yet.

I personally got the Savile Blue and went up to an XL for sizing. I’m about 5’9 and 175 lbs. I prefer my jackets to not be skin tight like my summer jerseys, but I could probably have fit an L just fine on this one. I like the XL for myself though. It feels like the right size.

The pockets on this jacket are well sized and allow for you to carry any other cold weather gear you might need for your rides to allow you to ride longer in various kinds of weather. The jacket looks super slick and overall is probably the jacket I reach for most frequently these days. I like that Castelli has built in subtle reflective components to the jacket without making it look or feel like a traffic sign. In short… you feel fast wearing this jacket.

I’m 6’ 185 lbs and wear a large in the vast majority of brands. After reading lots of reviews I decided to go 2 sizes up and got an XXL. It was comfortable in the shoulders and arms but had too much excess material in the midsection, so I sent it back and ordered an XL in orange. The XL fits snug in throughout with only a very slight amount of excess material in the back which becomes form fitting when I’m actually riding. I typically wear race fit jerseys and find this jacket to be as tight as I want while still allowing layers. My advice is if you want it close to race fitting do not go more than 1 size over. Fit of this XL is very close to my Giordana FRC Sette long sleeve in large. I have been riding in this jacket from the low 30s to the upper 50s with both long and short sleeve base layers and with winds from 0-25 mpg. I generally ride at high intensity and historically have had issues with overheating. This jacket has solved those and kept me comfortable in the gusty variable winds of Colorado. The side vents are awesome and allow some great ventilation without compromising aero. A slight unzip on the front zipper allows some great venting also. The orange color is definitely bright orange and not at all the more burnt orange the pictures show, but I’m okay with that. Overall, this jacket is worth every penny and for me is the perfect piece of kit for riding in 35-55F. The only thing I would change is to have a phone specific pocket in the back or 3 pockets instead of 2.

I just took delivery of this jacket and before I get to the weather, I've got to say this thing runs SMALL. I've never worn a size large anything in my life, always a medium or small, but I bought a large after reading reviews and if it was any tighter I'd have to return it. My biggest issue is in the sleeves. I regularly do moderate weight lifting, but my biceps are BY NO MEANS massive and it's a real struggle getting these things over my arms. Once it's on, I feel like there's enough stretch that it's fine, but the sizing seems like it's probably a manufacturing defect. If you're a bulky guy AT ALL -- maybe avoid this jacket.

Anyway, as soon as I got the jacket, I headed out at sunset with an Assos fall/spring base layer and a Uniqlo heattech turtleneck underneath the jacket. The temp was about 34 degrees and falling. After a couple minutes on the saddle with moderate effort, I felt plenty warm... My guess is I'll probably be able to get down into the high 20's no problem with this jacket, which is plenty for riding here in New York City. Don't think I'd buy anything warmer than this or I'd rarely wear it.

The waterproofing is exceptional. I ran my arm under the faucet for a minute and there was zero penetration... the water just ran right off.

A note about the orange color: On my MacBook Pro screen, it looks kind of burnt-orangey, but in reality, this is full-on traffic cone orange. Doesn't bother me too much though... probably safer that way. But you've been warned.

I got the fluorescent yellow - it is really good looking and fits well but is a little tight in the forearms and shoulders for me. With our huge temperature swings from frigid to merely chilly, I need gear that I can zip off as the day warms up. The rolled-up sleeves don't take up much space and I can stuff them in my third bottle cage no problem. Starting a ride in the low forties and ending in the low sixties works well with this gear. I start with a wind stopper vest over it and that comes off first and I wear wind stopping base layer under it. Also, remember that clouds and windy conditions can play a huge role in how comfortable you feel.

Loving this jacket for those cold fall/winter days! I tend to get pretty hot once I have a few miles on the saddle, but this jacket helped keep my temp perfect without overheating. Perfect for those early morning rides when it's cold, but once the sun comes out and you need to layer down having the ability to take off the sleeves is a game-changer.

I love this jacket! It's lightweight, but surprisingly warm and does a great job of cutting through the wind. Length is just right and doesn't ride up. I wore it on a ride in the 30's/low 40's with a thin SmartWool base layer and was comfortable - even slightly on the warm side at the higher end of the temp scale, but was happy to have it when the sun went down and temps dropped. I'm confident I'll be able to ride it in the low 30s with appropriate layering underneath. Fits snuggly so it doesn't flap or catch air to slow you down. I haven't tried it in the rain yet, so can't vouch for any kind of water resistance.

Two things of note about the fit - it runs quite small. I'm pretty slim and the XL was too tight (I could zip it, but didn't think I could put a base layer under that and still breathe) so I went with the 2XL which is snug but not a sausage casing. The arms are particularly narrow so it may not be comfortable if you have larger arms.

I rarely write reviews, but after my first ride in this jacket, I wanted to comment.

I couldn't justify buying it for myself, but received it as a gift. First ride in the high 40s and drizzling and I couldn't believe how well it kept me dry without overheating. I anticipate wearing this all through the fall.

I typically wear a size L in Pearl Izumi and the XXL fits great. Could probably go down to an XL but that would impact how I can layer under it in cold weather (with non-cycling specific base layers.)

I love the brand for the quality of their materials and their look. But unless you are a skinny boy, just avoid it, or at least avoid the "rossocorsa" line. 5'11" and I admit not to be the skinniest guy out there, nor the second, as a matter of fact, I have an athletic body... ok maybe I HAD an athletic body and now in my late 30s I relaxed a bit and put a little extra protection layer over my muscles, you know for the cold winters. But boy this wears small!!! I am a medium in almost every brand for t-shirt, shirts, and pullovers, 33 waist although my thighs have always a little bigger than the norm. Went 1 size up and can't even fit my arms in this thing!

The jacket itself is sick tho!!!
I was almost going for the XL or XXL but I know for a fact that is going to be all messed up because the length of the L is actually ok. Material and look are much better in real life than in the pictures.

It loses 1 star only because Castelli's chart is just wrong! Don't follow their recommendations or you'll end up returning your purchase. Or if your order it and you are not as light and skinny as a feather, just go for a couple of sizes up (or order them all and keep the only one that fits)!

The Perfetto RoS Convertible Jacket is a solid choice for anyone looking for a layer for when it is in the 40's and may creep into the 50's. I wear a medium jersey in most brands and went for a medium in this. It fits but is race tight. For layering, I would order a size up.



The material is one in which it has some resistance to it, hence ROS, meaning rain or shine. This is a valuable component as it serves a dual purpose, blocking the wind and keeping you warm. I'm looking forward to using this jersey in multiple situations. One, for days where its in the 40's with a base layer underneath. Another, when its in the low 50's, or I know it will warm up and I will unzip the sleeves and use the jersey paired with a pair of arm warmers. This ability to have this jacket work in temperatures ranging from 40-55 is its greatest asset.

I enjoy good gear almost as much as I am passionate about riding. But I have many jackets, and bought this one on a whim, hoping it would indeed improve on the Castelli Gabba Windstopper model (of which I have two--one with the removable sleeves, and the other a simple jacket). I don't buy things with the plan to return them, but I rationalized buying this one with the assumption that I would return it if it wasn't perfect.

It's perfect.

For starters, the Infinium fabric is for real. I wore only a thin Gore baselayer over a Castelli webbed base t-shirt during a 7-hour ride that took me from sunny, low 60s (f) to mid-30s with significant wind chill (got caught in the dark). My hands got cold at the mid-30s, but my core was just find in this jacket even though I didn't have any real insulating base layer.

The sleeve removal above the elbows is an improvement on the older model that removed at the shoulders (easier to remove on the fly, and also no bulky overlapping fabric, like the shoulder-removal predecessor, not to mention that the removed sleeves are shorter and thus take less space in pockets compared to the longer-sleeve of the predecessor Gabba jacket).

Other nice details include (i) the zipper cover terminating above where one starts the zipper (makes it easier to put on); (ii) fit is aero and bike-specific with no rolls of fabric when you're bent into riding position (fits tight on chest until you get in a riding position, then it's just right, and the longer sleeves work); (iii) high neck is nice for cold, but not an issue when unzipped in warmer conditions; (iv) the double pockets (instead of triple) concerned me, but they're larger and compensate for the 2 vs. 3 drop.

I'm 5'7", 130ish lbs, athletic build. Small was aero but won't provide much room for thick base layers. I also ride in M Castelli jackets. This superior fabric will lead me to wear this aero small over my bulkier Ms, though.

I was a bit hesitant on pulling the trigger on such an expensive jacket/jersey top but the thought of not having to carry multiple layers was very tempting. I had my first ride this past weekend and it delivered beyond my expectations. The temperature was around 45 when I started and ended around 52, with a lot of wind. I was very comfortable the entire ride, a bit chilly initially but once I started pedaling I was impressed at how windproof it was while not getting me soaking wet. The front ventilation zippers with the combination of the more breathable fabric on the back helped keep me dry and warm. I thought the blue color might stand out too much but it was actually more subtle than I thought. Looks a lot better in person. Would highly recommend.
As most who use Castelli would know, I had to size up to get the right fit. I normally wear a Large in Pearl Izumi stuff for example, but a XXL fit me perfectly in this instance.
I want to give a shout out to Nathan Simpson from CC who helped me with this order. If any of you need any gear advice, he is super knowledgeable and will work with you to find you the gear you need.