A secondary demand valve can be fitted to some full-face masks.

In addition, players in women's competition are required to wear protective full-face masks.

I could only see the man's eyes, as his face was obscured by the tight fabric of a full-face mask.

They were often equipped with the full-face masks mentioned by Arrian in his account.

This often uses a standard scuba second stage as the delivery unit, but is also used with light full-face masks.

The 7600 V2 full-face mask has since 2007 been well known.

He realized there must be a small radio built into the full-face mask.

He was wearing a blue environment suit and carried the full-face mask under his arm.

These may be worn with a full-face mask to provide impact protection.

Johnson was wearing a full-face mask, one equipped with a radio.