Are these the “comfort blend” or did they stop making those?

I believe these are the last and only of comfort blend I ordered on Amazon might be the only place to get them now, the stores that say that have it rarely ever have all the sizes.

Is this a miltupack? The picture has three pair, but that's not mentioned in the description.

Yes it is a multi pack, 3 pair, with different colors.

Are this good fit for a guy with big package?

Ive yet to find anything that fits my package

where do I choose the size I want?

Interesting. No button to choose an appropriate size forces me to move on and select an alternative style and/or brand. I'll help out those who cannot find the size chart: XS 24 - 26 S 28 - 30 M 32 - 34 L 36 - 38 XL 40 - 42 2XL 44 - 46 3XL 48 - 50 4XL 52 - 54 5XL 56 - 58 6XL 60 - 62 However, I don't expect many sales of this particular item without a means to make a size choice .