Quality of the goggles? Since you really have to use theirs.
Quality of the seal between the goggles and helmet parts? No gaps?
How's the air flow when the facemask is on?
Any chance of fogging up the goggles if you're really breathing hard?
Does the mask part feel sturdy or cheap plastic?
Howzat for starters?
I told my kids, "Someday, you'll have kids of your own." One of them said, "So will you."
-- Rodney Dangerfield.