I had to buy two pair to be sure I had the best size for my elderly dad.  I did return the larger pair.  I think they do fit true to size but had to prove it to my father.  After that bit of turmoil was addressed, the pants look great.  So much better than the flannel pants he was wearing.  He can get them on himself.  They'll be great for when we take him out, if the weather were to ever improve.