The Jewel Face Mask is reusable & adjustable. We installed clips instead of elastic, nobody wants sore ears! The mask can be sprayed and disinfected. It comes equipped with a one way smart breathing valve to remove heat, moisture and control exhaled air flow, to make you breathe free even while wearing glasses. The mask comes with a silicone filter disk. This valve can be modified by the customer to become a filter that works both on inhalation and exhalation by simply purchasing or cutting a small piece of filter material and inserting into the valve. The mask also has an internally wired nose area allowing the wearer to shape the mask to their face.