I bought and returned it.
I bought it based on the information form this forus (search for "hydrooptix") and claims from the HydroOptix web site.
Despite being able to use the mask without contact lenses (my eyes are -3.5) I returned it a week later.
The problem for me was that when I compared it to the Tusa Platina (which is a pretty average mask that I bought couple years ago) the field of view only increased by about 15 degrees in horizontal plane (each side) and was actuallty smaller in the vertical plane.
To put it simply, I can see my stomach with the Tusa Platina, but not with the Hydrooptix. Bad bad bad.
In addition:
- This mask is definetely not a low profile mask
- The purge valves are almost useless as some water will be left in the nose pocket and has to be purged via "normal" method
- I personally dislike neoprene straps (too little friction is good in a pool, but not good on a back roll)
- The plastic box it comes with is about half the size of a medum carry-on bag. (Actually it is a bit smaller
, but comparing to regular mask containers it is about 6X as big).
The only upside to the mask I found is that it actually provides an image with no visible distortions. The lines on the bottom of the pool are actually straight!
However, for me the primary reason for getting this mask was the increased field of view and that turned out to be not true (and this is comparing to a quite average mask).