With these pants you can order at least one size down.  I love this pants.  Theyre light weight and sooo comfortable.  Since Im not wearing the black pants for sleeping  Ill be wearing them for summer evenings outside (to protect against the mosquitoes)  I bought this color to wear for pajama pants.  I don't think Ive ever worn a more comfortable pant, so why not wear them as much as possible.  I might buy a couple more and cut them off at the knees to wear for sleeping during the summer.