Outer material: Paper Time saving design: The free elastic laces prevent loosening, so you do not have to worry about tying. The highly elastic laces stretch for a secure, smooth walk with less effort. Easy fit and comfort: One size fits all. Quick fit and easy to use. Adjustable elastic laces keep the shoe tight while reducing pressure points for lasting comfort. Package content: 1 pair including 2 shoelaces, 2 round buckles, 4 tail clips; or 2 pairs including 4 shoelaces, 4 round buckles, 8 tail clips. Suitable for many styles of shoes. Durable and reusable: Elastic shoelaces are made of polyester and latex wire. They maintain tension and tightness, are durable and easy to wear, and can be reused for a long time. Use scenarios: - Busy mornings for kids or adults who want a quick slip on and secure fit without tying. - For runners or travelers who need laces that stay tied during activity or long days. - For elderly or mobility impaired users who benefit from easy on off and a comfortable, snug fit.