Drinking Hatch Mask Valve

cults3d

A Coronavirus, Covid 19 mask valve that has an open and close snap clip hatch. When your having a beer while out and about you just pop the hatch take a sip and close the hatch. The design clamps on to the mask material leaving no open spaces. Gluing is optional, also closes perfectly level with hot glued filter material.ma This was designed for a beer bottle. Filter material not included. Hinge is supported by a cut wire hanger and glued.