I purchased these bottoms after reading the reviews here on Amazon.  I had polio and my legs are always cold so I was hopeful that these would be the answer for me.  They are nice and they do fit well but like most of the other long johns I've tried they don't breathe enough for indoor use which makes them just too warm for me.  Great for outdoors, great when the house is too cool but not cool enough for mid-range temps.  I actually did find something that works now and it's made by Medima - it's part angora wool and it breathes!  I'm thrilled with the medima bottoms and will probably use them the most but these by Duofold will fill in when needed.  I can understand why others like them a lot and like I said I have no problem with them so I would definitely recommend them for "normal" folks who want to keep warm!  They also fit well under clothes and don't "cling" to skirts so that is another plus.