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2. Full-face diving mask - Wikipedia

   en.wikipedia.org/wiki/Full-face_diving_mask

   A diver in a pool wearing an AGA full face mask A diver wearing an Ocean Reef full face mask Head protection helmet for use with Ocean Reef full face diving mask. A full-face diving mask is a type of diving mask that seals the whole of the diver's face from the water and contains a mouthpiece, demand valve or constant flow gas supply that provides the diver with breathing gas. [1]

3. Valsalva device - Wikipedia

   en.wikipedia.org/wiki/Valsalva_device

   Samantha Cristoforetti demonstrating the use of the Valsalva device in the Sokol space suit. The Valsalva device is a device used in spacesuits, some full face diving masks, and diving helmets to allow astronauts and commercial divers to equalize the pressure in their ears by performing the Valsalva maneuver inside the suit without using their hands to block their nose.

4. Diving helmet - Wikipedia

   en.wikipedia.org/wiki/Diving_helmet

   These may be worn with a full-face mask or half mask to provide impact protection when diving under an overhead, and may also be used to mount lights and video cameras. [3] [4] An alternative to the diving helmet that allows communication with the surface is the full-face diving mask. These cover most of the diver's face, specifically including ...

5. Diving mask - Wikipedia

   en.wikipedia.org/wiki/Diving_mask

   A diving mask (also half mask, dive mask or scuba mask) is an item of diving equipment that allows underwater divers, including scuba divers, free-divers, and snorkelers, to see clearly underwater. [ 1 ] [ 2 ] Surface supplied divers usually use a full face mask or diving helmet , but in some systems the half mask may be used. [ 2 ]

6. Diving equipment - Wikipedia

   en.wikipedia.org/wiki/Diving_equipment

   A prescription mask contains lenses mounted in the scuba mask frame or bonded to the original viewports. Diving helmets are often used for surface-supplied diving. They provide the same benefits as the full face mask but provide a very secure connection of the gas supply to the diver and additionally protect the head.

7. Ushanka - Wikipedia

   en.wikipedia.org/wiki/Ushanka

   Sheepskin ushanka winter hat with earflaps. An ushanka (Russian: ушанка, Russian pronunciation: [ʊˈʂankə], from уши, ' ears '), also called an ushanka-hat (Russian: шапка-ушанка, romanized: shapka-ushanka, [ˈʂapkə ʊˈʂankə]), is a Russian fur hat with ear-covering flaps that can be tied up on the crown of the cap, or fastened at the chin to protect the ears, jaw ...