According to an embodiment of the present invention, an advanced next generation helmet comprises: a helmet main body worn on the head of a user; a helmet face unit connected to the helmet main body and formed in a shape covering a face portion of the user; a canister mask unit connected to a breathing unit formed in the helmet face unit and purifying external air flowing into the breathing unit; and an external air shielding unit disposed on the helmet main body and the helmet face unit, and shielding a gap formed between the helmet main body and the face portion of the user and a gap formed between the helmet face unit and the face portion of the user so as to block external air flowing into the face portion from the gaps.
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