Take your breath control play to a new level.
This rubber bellows acts as a kind of "external lung" to catch the air, creating a fully closed rebreathing system when connected to the air outlet of the gas mask.
A shut-off valve is fitted to the underside of the rubber bellows to open (or close) the inlet. This means that the air supply is allowed or shut off.
Please note that the oxygen content of the recirculated air decreases. Therefore, for safety reasons - e.g. by using a T-splitter - make sure that sufficient fresh air can enter the circuit so that this play of breath does not escalate dangerously.
A big plus for the rubber enthusiast is the phantastic rubber smell of the breathing bag.
With standard M40 filter thread.
Please note that solo breathing sessions are not without danger. Therefore, never play alone or leave your partner unattended.