Winter jacket for single base layer

[Savon]

I am looking for a winter jacket (temperature range -3°C to 8°C about 26°F to 46°F) that :

1) can be worn with just a single base layer, as I don’t like wearing multiple layers.
2) has aero fit.
3) does not cover my backside (my winter bike has mudguards), I prefer something like a summer jersey with high pockets.
4) is colorful (bonus).
5) available in Europe
6) not fan of Castelli...

Note: I sweat a lot, even in winter, which might explain why I don’t like wearing multiple layers. And I avoid rainy rides, so I’m not looking for a waterproof jacket.

If anyone has an idea, I would be very grateful...

[Aeo]

Sportful Total Comfort jacket

[velomane]

I would suggest the Q36.5 Dottore Termico jacket. I have its predecessor and it suits me well down to -5C. The only problem is the colours are all muted.

[Savon]

I should have mentioned a budget (under 300 euros, preferably around 200). So no Q36.5, but I have to admit that this jacket seems (from the reviews I’ve read) to match what I was looking for.

The Sportful Total Comfort jacket is interesting, and it's even available on sale; however, there aren’t many reviews on this jacket.

[Mr.Gib]

I think you need to reconsider your approach. -3 to 8 is a massive range. No single item could possible work accross that range. And what about days you might ride hard vs days you might just cruise in zone 2 or lower? OK, so you sweat a lot - that calls for best breathability. Any thermal non-windroof jacket/jersey should work, but no way it could be warm enough to start at temps near freezing. You will need a light wind layer on top until you get warmed up, and here's the brilliant part - take the damn thing off and put it in your pocket before you start to sweat!

[jekyll man]

Some sort of softshell jacket, like a rapha proteam if they are still available.
Skull monton do a few versions , that are sensibly priced and of good quality. One has a removable inner thermal gilet.

You can always stuff a windbreaker gilet in your pocket, and pop it over if need be.

[basilic]

You will need a light wind layer on top until you get warmed up, and here's the brilliant part - take the damn thing off and put it in your pocket before you start to sweat!

I agree with this. I use a windbreaker over an Assos Bonka jacket (older model, closely fitting, they had a slim and a fuller cut) to start, remove the windbreaker as temps rise. If the jacket itself blocks the wind you'll sweat (or freeze, if you remove it).

[Mr.Gib]

I'll go one better. You can go with a wind jacket and a similar light vest underneath. I do this with the Aria line from Castelli which has significant non-windproof panels on the back and sides. On certain days you need both to start, then just a vest, and as things get even warmer I take off the vest as well. Both fit in a single back pocket. Nothing revolutionary about this - standard practice on the pro-tour with various jackets and vests. Dressing properly while cycling in changeable or difficult weather is more difficult than in any other sport. I find even a two degree difference will demand slightly different combinations. A great excuse to have a massive collection of cool bike kit. But I admit to being a bit of a "princess" in this regard, or maybe I'm just soft .

[Zitter]

Velocio just released their One Jacket which ticks most of your boxes. It does have a drop tail though, may need a thicker baselayer/midlayer for sub 0, and only comes in navy blue. It's rated 0-10c with a base layer/jersey and just over 300 euros

Alternatively, Bikecloset is doing a blowout on previous season Assos cold weather gear

[CustomMetal]

Spatz but does cover your butt, however would still seriously recommend

[TobinHatesYou]

I think you need to reconsider your approach. -3 to 8 is a massive range. No single item could possible work accross that range. And what about days you might ride hard vs days you might just cruise in zone 2 or lower? OK, so you sweat a lot - that calls for best breathability. Any thermal non-windroof jacket/jersey should work, but no way it could be warm enough to start at temps near freezing. You will need a light wind layer on top until you get warmed up, and here's the brilliant part - take the damn thing off and put it in your pocket before you start to sweat!

Indeed, at -3C I’d be wearing my Alpha RoS. But at 5C I’d be wearing my Alpha RoS Light or Flight Jacket Air. I’d be burning up in the Alpha RoS.

[gloscherrybomb]

I'd go for a merino long sleeve base layer (skiing ones are typically better than cycling ones, and cheaper) and a castelli perfetto jacket.

[ND4SPD]

Why not Castelli? Castelli Alpha Ultimate tick all the boxes (you can find it for under 200 euro), paired with Castelli Miracolo mesh baselayer, or when it's colder something like Ekoi Winter Racing Outlast:

https://www.ekoi.com/en-hr/thermal-base ... layer.html

[Savon]

So many ideas... Thanks for the answers.

Why not Castelli? A lot of cyclists around here wear Castelli, so if I can avoid it...

I have a windproof gilet, but the problem is that I always take it off too late.

On second thought, the number of rides I do below 0°C per year is in the single digits, so that might make things simpler to narrow the range to 0 or 2–8°C.

(I hate winter, but I also hate indoor cycling)

[chorus88]

I'd go for a merino long sleeve base layer (skiing ones are typically better than cycling ones, and cheaper) and a castelli perfetto jacket.

Definitely wear a long sleeve merino wool base layer ($50CAD) plus Castelli Perfetto Jacket/Long Sleeve ($150CAD) plus Castelli Perfetto Vest ($100CAD).
Altogether, (5) pockets for kleenex, banana, Clif bar, iPhone, tire levers & keys.
This morning.