Thick, warm sheets.
I have a king size set of these Home Classics flannel sheets. I have been using it for 3 years, and it's still in great shape. The elastic hasn't shrunk and the sheets are not worn out. The thread count is good, and the stitching is strong, so they are perfectly intact like the day they were bought. They are very thick and soft. They are great winter sheets but are too thick to use in the summer because they quickly overheat me.