I fully endorse the Sportful fiande kit range, for our wet UK weather. It doesn’t get that cold, maybe to 0C, but very damp and that kit never lets me down. For showery weather the Gabba from Castelli is a god send.
The long sleeve jersey from Pas Normal Studios is my most comfortable piece of winter kit (but soooooo expensive), with a fleece inside and really comfortable and stretchy fabric. I just bought a Sportful thermal bodyfit pro jersey, and while this is perfectly fine it is just not as well built as the Pas Normal one. The fabric is stiffer, there are a lot more seams in the way, and the waisliner is just simpler with a normal elastic band and a rubber inside.
I also think a thin merino hat or beenie or what it is called in english is a must have for winter riding.
Btw, i’m a big fan of layering instead of having a really warm jersey or jacket. So on cold days i’d have a medium or heavy woolmix baselayer, long sleeve jersey with brushed inside and a gilet or maybe a thin jacket.
+1 on Castelli. I have tights and jacket from them a few years old still rocking. Love their nanoflex sleeves. They actually fit cyclists. Every other set appeared to be designed for bodybuilders.
I have hundreds of bloody gloves none of which are any use. Either boil my mitts off or give me chilblains. Tried searching for neoprene gloves. Ended up with knitted sealskinz WTH! Am tempted by those gloves mentioned by @martinheadon
Big fan of the Castelli Transparente line of windproof jerseys. I can wear these in 50’s down into the 30’s (F) with different base layers as needed.
Assos jacket and vest from the Air Jack 851 series. Warm, fit perfectly, and apparently cannot be worn out. Only drawback is the jacket and vest are black so not great on the road.
Vests - I am a huge fan of vests (gilets). Have several from super light pocket size to very heavy thermal style. The thermal insulated vest is an under appreciated piece of kit as it protects your core but doesn’t feel as restrictive or bulky as a jacket.
My all time favorite dead of winter jacket is by Inverse called Inverse Air System. It’s a heavy material so very warm, but they cleverly added some long zippers in the sleeves which can be opened and closed as needed to regulate heat and air flow. It’s a clever and extremely well built piece of kit. The kind of stuff that makes the difference between going out and saying “no thanks”. Bought one for me, my wife and my dad. Friends saw them and ordered immediately. Inverse is still around but I can’t find this exact jacket any longer or would post a link.
For gloves, as soon as it goes sub-freezing, I use ski gloves plus liners or lobsters or full mittens. Am usually in the woods if it’s that cold.
Feet - for the 30s a good pair of booties, colder than that just get get boots. I like the Lake 303s in the woods.
6.1) Belgian Booties are nice for 40s and 50s and can be layered under neoprene booties for a bit of extra warmth.
a neck gaiter or “buff” is a must have when really cold. Castelli makes one that is a tube with a drawstring that can be a neck gaiter or a hat. Kinda funky.
Of course the best cold kit is your indoor trainer and Trainer Road (heh heh)
An aside, I love these threads. Almost always pick up a useful tip or two on what works and what doesn’t or a cool idea.