So Fine! 50wt Polyester Thread 436 Midnight Harbor is a premium 3-ply polyester thread designed for quilting, piecing, and fine detailed stitching. This cone features a deep navy-blue tone that adds rich depth and contrast to modern, nautical, and evening-inspired quilt designs.
The 50wt weight delivers crisp, flat seams with minimal bulk while maintaining excellent strength and durability. Its smooth polyester construction ensures very low lint, consistent tension, and reliable stitch performance on both domestic sewing machines and longarm quilting systems.
