Product parameters: Material: cotton Color: White+Black Size: 10 cm / 4 inch -Features: 1.Made of high elastic polyester fiber, which have good resilience allow them to restore the original length without deformation 2.Effectively reduce the pain and pressure of wearing a mask in the ear for a long time.Wear it in the most comfortable state 3.Easily slide over the earlcord with a soft adjustable buckel which holds the mask securely to the wearer 4.The elastic cord is durable and breathable, ensuring breathable while maintaining durability, making it more comfortable to apply ♥Package Included: 120 pcs Elastic Cord Service : - If you have any questions, please contact us first. All issues will be solved within 24 hours. - If you are satisfied with our product or service, please show your objective evaluation. Wish you have a good shopping experience here. Note : 1. Please allow 1-3cm error due to manual measurement. 2. Due to the light and screen setting difference, the item's color may be slightly different from the pictures. Thanks for your understanding! 3.Our delivery time is about 7-15 days. Please wait patiently for logistics information. Please check after receiving the goods.