three layers 50pieces disposable mouth mask pads replacement inside pad liner

strictly conforms to the national standards, our waterproof and dustproof mask liner pads will perfectly extend the life of your masks, thus reduce the waste of masks. universal design, suitable for various types of masks. easy to use: just peel off the adhesive paper, and then stick the pad to your mask interior, non-slip. made of skin-friendly non-woven cloth fabrics, breathable and comfortable.