Prym Elastic Cord, Polyester blend, White, 9.3 x 5.7 0.5 cm

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These universally usable rubber cords are highly elastic Suitable for use as elastic tapes for hats and masks or as a rubber strap for light fabrics Washable up to 40 degrees Suitable for tumble drying 1 x Prym White (1.5mm, 3m) Elastic Cord - 1 Unit

Amazon

Elastic rubber cord for hats, masks, trouser waistbands and much more Diameter: 1.5 mm Washable up to 100 degrees, suitable for tumble drying