CleanSpace Ultra & EX head harness is designed to be used with the CleanSpace Ultra or CleanSpace EX PAPR power units (PAF-0060 & PAF-0070); the head harness comes with every CleanSpace Ultra and CleanSpace EX PAPR; the part (PAF-0073) is a spare used for replacement in case of damage or loss; the head harness is made of TPU plastic, neoprene with nylon clips; designed for comfort over long periods; easy and quick replacement; product weight 20 g