Watch me putting a GP-7 gas mask. I am already wearing an heavy rubber raincoat well straped around the waist and a latex hood. Then I connect two tubes with rebreathing bags to the gas mask: one set is orange with a rebreathing bag second one is semi transparent with ventilation bag. To finish my heavy rubber outfit I put on rubber gloves. Then I enjoy some breath plays with the bags in closing the rebreathing bag's valve, breathing in and out the same aire, squeezing the ventilation bag to get more fresh air for exemple...
Very intense with great breathing sounds!

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