My son has someone make his and he sends me his old ones. They are so soft and just perfect to sleep in. Summer I make them into knee highs, winter I leave as is. I work around the house in them, then if I have to go to the door, I am well covered. His are reversible, pockets inside and out, great for cell phones, etc. I will call and see if he can find what pattern she uses. Also, thrift shops always have them. Go buy a set for $2.00 and make them your pattern. They don't have side seams so the pants are 2 pieces plus pockets.