Universal Nasal Mask Elastic Band(20190831)

1. Material: Nylon
2. Made of soft nylon material, environmentally friendly and durable
3. High elasticity, comfortable to wear, no strangulation
4. Internal fine flannel material, sweat absorption and non-slip
5. The chain interface is made of viscous material, which is easy to install and not easy to fall off.
6. Only fixed straps are sent for delivery, no other!