CleanSpace2 neck pads are designed to be used with CleanSpace2 respirators (PAF-0034); the neck pads (thick and thin) are included with every CleanSpace2 (PAF-0034) unit and may be used alternately; these parts (PAF-0014 and PAF-0016) are spares used for replacement in case of damage or loss; the neck pads are made of foam with neoprene (fabric) covering and are attached to the unit using Velcro strips; important: these neck pads are fabric with Velcro and should not be used when handling friable asbestos or in intrinsically safe certified zones