The pajama pants I sewed out of old 100% Egyptian Cotton (garage sale!!) sheets (and also, the shirt I sewed out of similar sheets) are the most comfortable clothing I own.

@ai6yr Wow, that's great! I have a lot of very comfy PJs, often sewn from used sheets. I especially love that they all have spacious pockets. They were usually toiles for garments I wanted to make with good fabric. They helped me to decide what to modify on future makes.