Gas filters are snowstorm filled to optimise space and volume, resulting in a smaller light weight casing that limits obstruction of view when fitted. Particulate P3S & P3H contain pleated filter media,providing more surface area for reduced breathing resistance. Sentinel filters are fitted with a simple connection which easily click into position. Less than 115g, all filter combinations are light weight and can be used on both Full Face and Half Mask|The P3P Filter is tested to ‘R’, allowing the use for more than one shift