plastic material, structure is elastic but also strong and sturdy, for bundling things. Surface is covered by quality polypropylene, which has good hand feeling and wont hurt hand too much under strong force. Simple design, easy to use. Whether youre bundling baggage for a trip, securing a tent or canopy cover, this elastic cord easily solve. A beautiful trip starts with protecting the supplies. Features - Color: Black. - Material: Plastic. - Size: 18x2.5x2.5cm - plastic material, structure is elastic but also strong and sturdy, for bundling things. - Surface is covered by quality polypropylene, which has good hand feeling and wont hurt hand too much under strong force. - Simple design, easy to use. - Whether youre bundling baggage for a trip, securing a tent or tieing down other items, this elastic cord easily solve. - Durable and wear-resistant design, protect your belongings. A beautiful trip starts from the supplies. Package list: 25 x elastic cords