This PJ Lounge Pant is made with Mammoth Flannel. If you've never made pants before, I recommend sewing the Anna Pant first - which Romel did in these videos here and here. My piping tutorial is here. I have other Pants patterns in the shop, and the Ethel is one of my all time faves. I have a full course to sew Ethel here. It's a modern drop-crotch style with pleats that is super comfy and Artsy looking.