Unlike most elastics that have a single core which is covered, this has multiple cores that are covered which is how they get the barley twist effect to it. 50% elastic and 50% cotton.
Round Elastic Cord 1mm/1.5mm/2mm/2.5mm, Stretch Elastic Bead Cord for Crafts
Round Elastic Cord Stretch Elastic Bead Cord for Crafts 1mm/1.5mm/2mm/2.5mm
Flat Elastic Cord White/Black Flat Elastic Cord 3/4/5/6/7/9/12/25mm Sewing Masks
Round/Flat WHITE Elastic BLACK Elastic Cord 1mm-75mm Sewing Elastic Face Mask
Elastic Cord Flat Sewing Elastic Band White Black Elastic 0.5''inch
British Premium 4mm Macrame Braided Cotton Cord/ String Craft Lace