Gütermann | エクストラストロング糸 | 100 m | #036 | チャコールグレー

The spool is a bit small for the price, but that stitch strength is no joke—it handled a heavy denim repair without a single break. The charcoal grey shade is exactly what I needed, and the thread’s softness makes it a pleasure to work with.

I’ve used this extra strong thread on my heavy canvas work bag, and the polyester held up perfectly through the machine. The 100 m length was just enough for the whole project. Stitching feels solid and hasn’t snapped under load.

The charcoal grey color matches denim perfectly, and this thread held up through three rounds of patching a heavy work bag without fraying. It's surprisingly elastic too, so the seams move with the fabric instead of snapping.