A few months back I purchased a Hollis M1 mask, and since then I have admired it daily, sitting in its container amongst my dive gear. I have been itching to get in the water again, so I could give it a try.
Correctly fitting and wearing a mask for scuba diving is not as easy as it looks. The problems that occur from an ill fitting mask can spoil your dive. Not having a brand new mask treated before you wear it for the first time leads to more problems. Over tightening of a mask is a problem all by its self!