Isacord 1000m 聚酯纖維 3732 石板藍線

This slate blue shade is perfect for matching denim and navy fabrics. It's noticeably stronger than standard rayon thread, handling high-speed commercial embroidery without fraying. The 1000m spool is lasting a good long while too.

I’ve been using this thread for a few embroidery jobs, and the smoothness is incredible—it glides through the machine without a single snag. The strength is impressive too; I haven’t had any breakage even on dense designs. This color is a nice, subtle slate blue that works well for blending.

This shade is a perfect match for denim-heavy projects, and the thread glides through the machine without fraying or snapping. The strength really shows on dense satin stitches, and the color stays true after a wash. Feels far smoother than the last polyester spool I used.