YLI Hand Quilting Thread 211 05 012 Light Blue When we introduced YLI Hand Quilting Thread 24 years ago, it was the best hand quilting thread in the market. Though our new version is slightly different from the Original, it still is the best. 100% cotton. The glazed finish keeps it from tangling or knotting, makes it glide smoothly through the fabric layers, and simplifies needle threading. 40 weight/3 ply/500yds. And it comes on a wooden spool!