@sinabhfuil take a look at products made from Alpha Direct. It's a synthetic material. I have a hoodie made by Farpointe from the 90gsm weight, and it is amazingly warm, cozy, light and takes minimal space. Never smells bad, dries quickly. An Alpha Direct layer plus a lightweight shell (Patagonia Houdini, in my case) is very effective at keeping me warm and dry. Garage Grown Gear sells AD protects made by small makers.
I also have some down stuff as well. The Marmot Ghost Whisperer jacket and pants have been very useful to me. I was patient and found one on sale, and the other lightly used on eBay. They are pricey. Abd I have a 20-year-old Patagonia Nano Puff jacket with his that has synthetic, down-like filling that has been just amazingly good. Packs down into a minimal football. I bought it and the Houdini shell used, just as Yvon advises, and I've patched it.
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