These are very comfortable and I'm glad I took a chance on them. They are thicker and more substantial than yoga pants or pajama pants (they would be too heavy to use literally as pajama pants). They look and feel more like stretchy skinny jeans.They appear to be a finely ribbed knit. If you look at them from 4 feet away or less you can see very narrow ribbing lines, much thinner than corduroy lines. I think it looks good given the color. The faded 'stone wash' look was exactly as in the picture.I will comment a bit on how they fit on me for the benefit of women who might be a similar size. I'm 5'6" and 110 ten pounds, have a mommy pouch (not a narrow waist), and have a relatively flat bottom. I'm not curvy or hourglass shaped, I have more of a boyish figure. I usually wear a size 2 (US) in women's pants, a size 5 in junior's pants, and a 26 or 27 in waist sized jeans. I have a 30-31" inseam. I chose an X-small and it works fairly well for me although just a tad loose. An XXS might work better, but I'm afraid it may be less comfortable and harder to put on (update: I tried XXS and it was way too small). The waist was a bit too loose on me in XS but I could adjust it with the drawstring if I wanted (I don't bother tying the drawstring since I don't tuck in my shirt). The waist is 2" below my navel. In inseam, I might have preferred 1 inch less but they don't touch the floor and the extra inch will guard against shrinkage. With my 5'6" height, they were about .5-1" longer than on the woman in the photo.The XS allowed me to pull it over my hips in 1-2 seconds. I wouldn't have wanted pants where it took me many seconds to take off and put on every time I used the bathroom. They are slightly harder to get on than yoga pants or pajama pants since less stretchy, but are still more stretchy than my other stretchy jeans that have zippers.The XS ones feel perfect for me on days I'm sitting a lot (since they are not constricting in the knees) but if I'm going out on the town I might prefer ones that are more painted-on. (Update: I tried the XXS, and they were so much smaller I couldn't even get them over my hips, XXS is like a 00 might fit a preteen only).On a person with slim or average lower calves and ankles, these are skinny jeans, not jeggings because there is about 1.5 inches of looseness at the ankle. In other words, they don't look like tights.With these jeans you would not want to tuck in your shirt because the top of the zipper looks fake and there is no button or belt loops to help with the realism. That is fine with me since I usually wear untucked shirts with jeans anyway. I think they should make another version of this with 1" higher rise that has belt loops and a button above the fake zipper, and that would make it practical for wearing with shirt tucked in.With my slender build, they were low rise but not too much so, there was no problem with showing too much (like a plumber) when sitting down.The best thing is the faded color which makes them look like denim jeans. All faded jeans these days seem to be more faded in the butt and thighs and the same is true with these, maybe that's the trending style but I would prefer a bit more even fading.So far they seem to bounce back and not become baggy. Update: after trying them on again just now, I do believe they have stretched a little to be somewhat bigger all over than the first time I put them on, but still not bagging unevenly in the knees or anything like that.They did not retain a chemical smell (which seemed to originate from the plastic mailing bag) after being washed. All of the pockets (front and back) are real and functional.Overall, I love them. I always avoided pajama jeans in the past because formerly they were only available in dark navy rinse color which I don't prefer in regular jeans either.