In underwaterhockey language they also call it mask. A diving mask is used for several reasons:

• Players can equalise their ears as the nose is covered
• Unlike swim goggles, a mask sits outside the eye’s orbit, reducing the effects of any impact
• Improved underwater vision

Verry important is that the mask consists of 2 lenses, prederably with tempered glass. This is indicated by Tempered, T of Securit.

You can buy a mask in a local dive shop or order at

• Decathlon
• CanAm
• Hydro