Isacord 1000m ポリエステル 3645 プルシアンブルー 糸

This thread runs through my machine like butter, and the 1000m spool means I’m not constantly swapping cones mid-project. The Prussian blue has a deep, rich saturation that pops beautifully on dark denim.

This spool runs through my machine like butter — not a single snap or fray after hours of dense logo work. The polyester is noticeably tougher than the rayon I used to use, yet the stitches lie flatter than I expected.

The blue is so deep and rich on dark denim, and the polyester glides through the needle without any fraying or breakage mid-design. I've had zero tension issues with it on my multi-needle machine, which is rare for a 1000m spool.