If the eros quick don masks are certified to 41,000', what good would it do if you flew above FL410. For instance, The Eros mask is certified to 41,000', many aircraft have these installed and fly above FL410, such as B757, Gulfstreams, Westwinds, Astra's etc. If you were cruising at say FL450, would you be playing Russian roulette or am I missing something.
Any help would be appreciated...