-- no fog thermal lens!
-- thick & flexible rubber mouth & chin protection!!
-- great comfort!!!
-- excellent air flow!!!!
Weaknesses:
My visor came a bit deformed; required some bending and prying. It's new, I should be the first to wreck it.
Conclusion:
Why choose the Flex 7 over the Flex 7 IZE? Personally, I prefer the thicker mouth and chin protector of the Flex 7 over the thinner rubber on the IZE. As much as I love my battle marks, I prefer they not be on my neck or face. I recommend this mask to EVERYONE!