The So Fine! Big Sky 470 Poly 50wt thread is a high-quality 50 wt. 3-ply polyester thread designed for bobbin thread quilting and sewing. This lint-free matte-finish thread is smooth and perfect for blending, making it a favorite among both longarm and home machine quilters. It is also ideal for use as a bobbin thread. With a length of 3280 yards, this thread in the Big Sky color is a versatile and essential addition to any sewing enthusiast's collection.