>>2807454>The internal volume is so high that there is a chance that you don't expell all the air from it and rebreathe your CO2at least the ones i have seen, they have different chambers with valves, no much volume next to the mouth, the air comes throught the chamber in which your eyes are, and then is expelled directly to the water
>Also to dive below the surface, you need to be able to remove a snorkel, pinch your nose, and equalize. This mask thing prevents it. you cannot dive with it, it floats a lot. like seriously i tried to dive with the decathlon one to just like less than 2 meters deep, and it really fights you, i couldnt manage
I worked on safety regulations, we discussed them the ones sold in the eu are safe unless you go full retard against them
but i remember people making claims like you and was like, my mask doesnt work like that wtf, so i guess there were models that are actually dangerous? but they could show us something sold today that wasnt safe
