this citation summarizes a one-page announcement of technology available for utilization. a cooler, quieter garment for isolating a wearer from environments containing toxins or irritants is designed to increase the worker's safety and efficiency. a new breathing air garment for isolating a wearer from hostile environments includes a suit and separate head protective enclosure or hood. the hood and suit collar are cylindrically shaped and are large enough to enable the wearer to withdraw his hands from the suit sleeves to perform tasks within the hood. breathing air is supplied from an external air line with an air delivery hose attached to the hood interior. in addition to being quieter and cooler than in prior art protective garments, rapid hood removal can be accomplished by the worker himself in an emergency. the suit is formed from a protective layer of material impermeable by toxins or irritants and is dimensioned to cover the worker's torso and limbs. the head protective enclosure is connected to the suit collar with a neck seal arrangement to provide communication with the suit interior in attached position. included in the suit is an entry seal having a vertical slit bisecting the suit collar and rear torso panel. an adhesive sealing flap seals the slit after the worker enters the suit