This self threading needle is suitable for leather, denim, silk, canvas, cotton cloth and so on. This automatic hand stitch solves the problem that the eyesight is not very good, and DIY manual lovers, it can be easily threaded.
I would have preferred to use my usual Bernat Handicrafter 100% cotton worsted weight yarn, but this pattern was designed in the air between Edmonton and Vancouver, Canada, and I cast on using the only yarn that I had with me, Araucania Ulmo, while on a lay-over in Vancouver, so I will not give measurements and grams this time.
