So Fine! #40
Get the strength of polyester with the look of medium-sheen cotton. So Fine! #40 is a filament polyester thread with a 1-inch color-change interval. Its strength and medium sheen make this quilting thread ideal for any quilting application whether on a home or longarm machine. Available in 35 colors, the smooth, lint-free processing it undergoes is a patented process. This makes So Fine! #40 thread the only thread like it in the world.