These handy silicone tubes from The Knitting Barber are perfect for holding stitches and allowing you try on your knits easily without losing stitches. They come in a set of three, packaged in a tin box; there is one 150 cm (60 inch) cord and 2 that are 75 cm (30 inch) long.
Pandahall 10 Rolls Tubuing Rubber Cord 2mm Rubber Knitting Barber Cords No Hole Tube Silicone Cords for Knitting Projects Craft Work (10 Colors) : Tools & Home Improvement
Sharp Fixed Circular Needle │ Large sizes - Stolen Stitches
TKB - Knitting Stitch Holder Cords — Loop Knitting
How to use stitch holder cords – Elizabeth Smith Knits
The Knitting Barber Cords Stitch Holder Cord - Stolen Stitches
Why did I not think of this before? Never using waste yarn again : r/ knitting
The Knitting Barber Cords Stitch Holder Cord - Stolen Stitches
Cord Set from The Knitting Barber – The Woolly Thistle
The Knitting Barber - Original TKB Cords – Stix