Although I generally wear a large in pj bottoms (usually because the length is never long enough for me at 5'10"), I decided to buy this in XL because it is 100% cotton.  Wish I had not done so. I have washed them several times & they have barely shrunk--which I guess is a good thing---but now have very roooomy pj pants! I wear a 34" inseam, and the XL is a perfect length for me.  As far as quality, they seem to be fairly well made for the price.  Really, at this point, the only real issue I have is that their kind of wrinkly when I take them out of the dryer. I would buy this product again at this price point.

1-22-14 Update:  These pj bottoms are still going strong!  They have faded just a bit from repeated washing, but this is to be expected.  Well constructed and will last years, I believe.  Great go-to pajamas for cold winter nights.