Christmas Decorations -600 Units Flat Elastic Cord Stopper For Face Mask Making Highlights Generic Brand 600 Units Flat Elastic Cord Stopper For Face Mask Making Description: Elastic Cord Mask Sewing Making with adjustable flat buckle cap. Made of polyester nylon with good resilience to restore the original length without deformation. Each lanyard is equipped with a flat silicone adjustment stopper that allows the length of the lanyard to be adjusted to hold the mask firmly. Great sewing accessories for DIY masks. Each cord is 4mm wide. Pack of 400 pieces in white and black. specification: Cord with: 4mm Package includes: 600 pieces of mask cords (300 pieces in white, 300 pieces in black) Note: Colors may be different due to different monitor display. Please allow slight size difference due to manual measurement.