100pcs Disposable Medical Mask Pad Isolation Filter Anti-haze Dustproof Breathable Replacement Cotton Pad

This breathing insert protective mouth mask filter allows your mask to be reused without worrying about no mask. Compatible with most dust masks, easy to insert or replace the original one with no problem. Widely Use:In the hospitals, restaurants, beauty salons, nail shops, pet shops Gray sky. Note: Suggest replace the fliters every day of uses for the best effect.