What is the best yarn for knitting a scarf for a guy?

I'm trying to knit my boyfriend a scarf and I have close to no experience with knitting. I am getting help in knitting a scarf, but I want to pick out the proper type of yarn. The most important thing is warmth and from there is softness. I hope someone could make a recommendation to brand and type. I... show more I'm trying to knit my boyfriend a scarf and I have close to no experience with knitting. I am getting help in knitting a scarf, but I want to pick out the proper type of yarn.

The most important thing is warmth and from there is softness. I hope someone could make a recommendation to brand and type. I am going to be shopping at Michaels so if you can make recommendations that are available at Michaels, it'll be great.

Thank you SO much.
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