Custom Aperture Science Portal Gun Gas Mask

Gas can seriously screw up your day... that cake is no lie. So what better way to protect yourself from those harmful toxic fumes than strapping a portal gun gas mask to your face and keeping your ass alive and WELL. Or, well enough by GLaDOS standards (which are not well at all).

Do read on to see more and wish that when the time comes, you had this attached to your head.

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