Mask tension release lanyard can Reduce pressure and pain in the ears Due to recent special circumstances, staff member who insist on the front line must wear protective masks for several hours at a time, This can cause a lot of strain around their ears. These 'Adjustable Mask Extension lanyard' are designed to tightly hold a mask in place without any of the extra strain on the persons' ears. mask adjuster is made with soft microelastic cotton rope and plastic adjusting buckle, Can be adjusted freely mask ear strap length to fit your head perfectly, easy to clean, machine washable. suitable for most earhook masks or disposable masks. Material: soft microelastic cotton rope and plastic adjusting buckle Package Contents: 4 Pcs mask strap extender Color: Black Only the above package content, other products are not included.