Wearing on neck, your face masks or glasses any more ears after long time wearing masks or glassesEasliy any cloth & disposable or reusable ear loop face mask, providing a more snug, comfortable fit, while your mask free and clean of dirty surfaces when not in useReduce the pressure on the ear, relieve the pain, even if wear for a long time also do not feel uncomfortable, prefect for teachers, nurses, doctors, healthcare, outdoor workers, etc adjustable length mask necklace not only use as mask extension , mask band extender, mask ear cord retainer, also use as id badge card neck lanyard & key chain holderSize:70cmColour:blackMaterial:nylonPackage Contents:40 * LanyardOnly the above package content, other are not included.Note: Light and different displays may cause the color of the item in the a little different from the real thing. The measurement allowed error is +/- 1-3cm.