It's called Glide and it's getting rave reviews from the professional long armers. It's a non stretch poly that shines like rayon. I got a sample spool of the Glide and two free sample bobbins of Bobbin Line made by the same company. I started free motion quilting a project to try it out and and no breaks, snags, tangles or any problem at all. The look of the thread is so nice in the quilting stitch. It's awesome.