By "comfortable fit," I mean jerseys that still fit a little loosely on the body even when the correct size is chosen.

I'm 1.8 m tall and weigh 77 kg, so I usually wear EU size L.
With jerseys from Chinese suppliers, I have to choose size XL, which even when the length is right are very tight across the chest and upper arms.
If I go with size XXL, the jerseys are too long.

A sporty jersey with a slightly looser fit is the one linked here from the Austrian company Löffler:

https://www.loeffler.at/shop/en/30384-m-bike-shirt-fz-dimi.html

Does anyone have a recommendation for a sporty road cycling jersey with a loose fit?

Most of the jerseys available tend to have a tighter fit.

Hello,

which chainring for a Shimano XT 8100 with 32 tooth is higly recommended?

I'm useing the following Bibs from Spexcel.
They are okay for the 2 - 3h Winter rides in the Northern Part of Europe.

https://de.aliexpress.com/item/1005003538655977.html?pdp_npi=4%40pre%21EUR%21%E2%82%AC%2051%2C99%21%21%E2%82%AC%2051%2C99%21%2156.04%2147.50%21%40210384cc17259553227597107ef76a%2112000026272221711%21sh%21DE%210%21X&spm=a2g0o.store_pc_allItems_or_groupList.new_all_items_2007599144627.1005003538655977&gatewayAdapt=glo2deu

Does anyone have experience with this linked cycling jersey from the manufacturer YKYW-Bike?

https://de.aliexpress.com/item/1005004202804518.html?spm=a2g0o.best.0.0.33412f18UXTE3q&mp=1&gatewayAdapt=glo2deu

I'm also looking for road bike jerseys that are a little wider cut, i.e. not aero fit.

Hello,
I am looking for good quality MTB T-shirts for enduro, XC and touring use.

Does anyone have any experience with T-shirts that are available from Aliexpress?

The inside is lined with fleece and keeps you very warm at temperatures around 10°C.
For rides at 20°C they would definitely be too warm for me - from around 15°C I always ride in short jerseys whitout warmer.

I use these warmer from Ykywbike - good fit (EU size L -> size XL) - they are ok for me.

Link: https://de.aliexpress.com/item/1005006103051131.html?pdp_npi=4%40dis%21EUR%21%E2%82%AC%2026%2C05%21%E2%82%AC%2024%2C73%21%21%2127.31%2125.93%21%40211b600b17120750457352043e2274%2112000035755883989%21sh%21DE%211984007265%21&spm=a2g0o.store_pc_allItems_or_groupList.new_all_items_2007508669483.1005006103051131&gatewayAdapt=glo2deu

For shirts, I always refer to the size chart with the measurements for chest circumference and back length.

This has worked very well for the brands Spexcel, Rion and YKY.

I can recommend the Spexcel long sleeve jersey, linked below, for rides at temperatures around 5 - 10°C in combination with a thin baselayer, or as a jersey under a winter jacket at lower temperatures.

The front of the jersey is lined with fleece so that the wind doesn't get through.

I wear the jersey with a height of 179cm and a weight of 80kg in size XXL and it fits perfectly.

https://de.aliexpress.com/item/1005003545798767.html?spm=a2g0o.store_pc_groupList.8148356.14.1066327e8g0s8V&pdp_npi=4%40dis%21EUR%21%E2%82%AC%2034%2C40%21%E2%82%AC%2025%2C23%21%21%2136.62%2126.86%21%4021038ed817008296443376430e84ce%2112000026236852784%21sh%21DE%211984007265%21

I also use the Elita One seatpost since 2 years and about 10000km on my road bike without any problems.

Hello,
does anyone have a recommendation for a good Winter Bikejacket?

I am interested in the linked jacket, maybe someone has experience with it and can report on it.

https://de.aliexpress.com/item/1005003488179482.html?spm=a2g0o.store_pc_groupList.8148356.14.46063e06wBw7hl&pdp_npi=4%40dis%21EUR%21%E2%82%AC%2042%2C61%21%E2%82%AC%2037%2C50%21%21%2143.95%2138.68%21%40211b88ef16984070834908856ef4e5%2112000026019977075%21sh%21DE%211984007265%21