q2 5 1 face cover pad facial interfaceUpgraded Ventilation Design to Reduce Fogging KIWI design has developed the unique patent L shaped vents interface bracket. There are full width grills located on the top and bottom of the interface, even underneath the lower foam padding area, ensures efficient airflow, expelling hot air and allowing cool air to enter, effectively preventing lens fogging Reduce Pressure and Red Marks The Face Cushion is made with premium quality PU leather, it's soft