they are both intende to protect your brain from impact's and are both hard except for babies because they usually have a soft spot on the top of their head for a length of time after they are born.
Yes you can wear a skull cap under a ski helmet.
The cranium (the skull minus the lower jaw) covers and protects the brain much as a helmet does to protect the head.
because it is hard.
helmet = skull cage = ribs (as in "rib cage")
what you have to consider here is that the helmet may keep your skull from cracking or braking. But while the helmet protects the skull as it is stopped suddenly (when you crash) the brain inside the skull continues to travel at 50mph and crashes against the inside of the skull, and this may kill you.
No, there's only the standard EVA helmet and the design of the helmet with a skull carved into it.
tigrix skull shell
Skull
You unlock Emile's Skull helmet by reaching Major and purchasing the E.V.A. base for 30,000cr, later on E.V.A. [C] will be revealed once you hit Commander and will be available for 120,000cr.
Its a skull with a helmet on and they're made by pro comp. The name of them are metal mulisha.
Yes. because you could ckack your skull.
Baskull, I think.