NEW AGA INTERSPIRO FULL FACE MASK SHIELD LOCKING RING BUBBLE DEFLECTOR COLOR BLACK EVERY ONE WHO HAS THE AGA MASK SHOULD HAVE A SPARE ONE OF THESE AS THEY COME OFF AND YOU CAN NEVER FIND IT THIS WHEN YOU BREATH OUT  KEEPS THE BUBBLES FROM COMING UP  IN FRONT OF YOUR VIEW DEALER COST EACH $5.99 RETAIL 15.00 YOU ARE BUYING 4 RINGS