Girls, can you tell me what clothes they used to dress babies in winte…

Girls, can you tell me what clothes they used to dress babies in winter? I wanted to buy a warm stroller blanket with a hood. From Mimi there is with filler 400 gr. I thought it could be worn in such weather with an autumn jumpsuit, but then I started doubting. I also look at winter onesies. Which one is better? Down or microfiber? I thought the Reima company was good, but there are a lot of bad reviews. ? I would just like to put the baby in the blanket and go for a walk. Without a thousand layers