The Israeli 4A1’s front module incorporates the voice emitter system and the NATO 40mm filter attachment port. These are attached to the back in a single unit with the adjusters at the front of the mask, working with a reverse traction system which allows the mask fit to be easily adjusted and tightened to fit the face. The Israeli 4A1 Gas Mask uses a five-point elastic rubber straps system that allows for a quick release of the mask. This section of the Israeli gas mask also contains the drinking attachment, which is easily reachable in the cup of the mask. The nose cup of the Israeli Military mask also implements a voice emitter system which allows the wearer to provide clear communication without any distortion from the mask’s seal. The airflow system of the mask ensures that no exhaled air is circulated through the mask, which reduces moisture, internal fogging of the lenses, and ensures that there is no risk of a CO2 buildup in the mask. The oral-nasal area of the mask is made of the same permeable rubber as the outside of the mask. The nose cup is of the Israeli 4A1 mask is designed to be comfortable and effective as it is a crucial part of the system. The facepiece has connected buckles on its exterior which allows the supporting head harness to have a number of strong points of contact, keeping the mask applied firm to the face and adjustable for different sizes. But for the fact that it is not single wide-range face shield, and that they were small lenses, the range of vision is not as limited as one would think when looking at the gas mask. There is much less of a field of vision for the Israeli 4A1 gas mask in comparison to other CBRN gas masks that we have reviewed. The facepiece holds two scratch-resistant polycarbonate lens sit far enough away from the eyes to allow for prescription glasses to fit on the face while the mask is being worn. It should be noted that facial hair can prevent an airtight seal, rendering the capability of this mask to be used as an NBC mask ineffective. This helps wearers of gas masks who might generally have trouble with facial features in forming a seal with a gas mask. The mask uses a well-designed sealing lip to assist in creating an airtight seal. The Israeli Defense Civilian 4A1 facepiece is made of a formulated impermeable rubber that is soft to wear and easily able to create an airtight seal to the face with, which is the most important consideration for a good NBC gas mask. The primary and functional part of any gas mask is the facepiece, which is responsible for creating a seal of decontaminated space for the face. It should be noted that this is not a CBRN mask, as they provide more protection in a wider range of scenarios as discussed in our rigorous review of CBRN gas masks here. The gas mask itself is made of an impermeable rubber which has a high-resistance to NBC agents and provides a tight seal and comfort to the wearer, allowing the mask to be worn for long periods until a safe, decontaminated area is reached. When used in conjunction with NATO 40mm NBC/CBRN filters, this full face mask is able to be worn in a nuclear, biological or chemical (NBC) contaminated area and provide a decontaminated face seal and filtered air supply to the wearer. This Israeli Defense Force Civilian Gas Mask is an Israeli Civil Defense Authorities approved gas mask.
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