Isacord 1000m 聚酯纖維 4421 淺野鴨綠 線

Used this on a heavy duty denim project and it ran through the machine without a single break. The strength is noticeably better than standard rayon, and the colors are vibrant.

Finally got the 1000m spool for some detailed monogram work, and the thread's consistent shine really makes the lettering pop. The polyester strength gave me zero breaks, even at high speed.

The tension stayed perfectly consistent even at high speeds on my multi-needle machine, which is a huge time-saver. The thread has a nice sheen without being too glossy, and I appreciate the 1000m spool lasting through multiple projects.