Abstract: A collapsible protective hood connectable to a source of air is suitable for use in clean rooms, for biological, nuclear, or hazardous material protection, and the like. The hood is generally made of a minimum number of panels which are electronically seam fused together without the use of any adhesive. The hood can optionally contain sleeves, optionally be of a long length, and optionally have a long interior flap. The inflatable collar, when inflated, generally supports the weight of the hood on the user's shoulders and preferably contains a plurality of air-breathing holes which provide air to the user. In another embodiment, the collar extends to above the user's head wherein air holes are provided and the slight pressure within the hood maintains it in an inflatable shape. The protective hood is made out of flexible non-woven material or woven material generally in the form of a laminate and can be readily collapsed in generally a flat shape for storage or transportation purposes.