that's a copy of the TM mask...
From what I heard... its really bulky, you cant separate the mask from the goggles, so you'll have to play with a full mask = you wont be able to aim using your iron sights or optics....
Also, the lens is not ballistic rated... so some fields might not allow you to play with it, or you could risk getting your eye permanently injured.... your choice?
Personally, I would never cheap-out on eye protection, because I did for my first last week (bought the cheap JT goggles at Canadian tires), and they fogged really badly + they weren't comfortable at all.... Now waiting for a pair of JT Spectra!
PS: I also wear glasses....
So for now I'm going to try
JT Spectra + thermal lens + FOGTECH + double fans! (shoudn't have fogging issues with it
)
And I would recommend you to use either "ESS turbofan" goggles, or Paintball masks (which almost all have a detachable mask)