I ordered these drawstring Intimo Men's Sleepwear Pants for my uncle, for whom I am a full-time caregiver.  These have good weight to the fabric, and they keep his legs warm (he has poor circulation).  I actually have several pairs of these now, and they are heavy enough, and warm enough, for wearing out of doors (he is wheelchair-bound, and transitions from the house to the senior bus that takes him to doctor appointments, etc.).  I have had these now for nearly a year, and they are laundered frequently, and have held up very nicely.  I am definitely going to be ordering more for him soon.