Keep healthy and comfortable: hang the sling around your neck and then hang the sling of the mask at both ends of the rope. You will be able to resist risk and breathe freely. Don't worry about throwing away used masks or putting them in your pocket! Easy to use: a small hook on the mask fastening elastic belt. Like a glasses rack, like a necklace. will be used with your existing earmuffs or headbands. Next, when you want to breathe more freely, you just need to take off the mask. They do not lose or become dirty. Don't worry about throwing away used masks or putting them in your pocket! super light - no burden: these ropes will not cause any trouble for your work and life. Both at work, on the phone and for lunch, these lightweight, reliable ropes don't burden you, they' re for everyone, including surgeons, students, teachers, service workers, it practitioners, professional players, Length :30 inches