Feature:1. Adjustable Length: The elastic cord is durable and adjustable in length, which is very convenient to use, more comfortable to wear, and will not feel uncomfortable all day long.2. High Density Plait: Mask elastic uses high density plait without worrying about fraying or breaking again, it is the best choice for making earmuffs.3. Fastening: Mask elastic uses a soft, adjustable buckle to easily pass through the ear cords to securely hold the mask on the wearer.4. DIY Production: You can enjoy the fun of sewing elastic with your family, and various combinations can meet your needs.5. Scope of Application: The elastic belt can easily restore the original length without deformation, and the allowable elastic deformation range. Great for sewing, crafting and crafting.Specification:Item Type: Mask ElasticMaterial: PolyesterSpecifications: 1 SetProduct Use: HouseholdScope of Application: Most ScenariosSize: Approx. 10.5cm / 4.1in.Package List:40 xMask Elastic