The Force™ 8 Twin Cartridge Half-Mask features the Typhoon™ valve. This valve offers superior low breathing resistance, allowing you to breathe comfortably without fatigue. Made from a durable thermoplastic rubber, the mask is comfortable and offers a superior fit to most face shapes. The carefully designed 4-point suspension harness has quick release buckles. The mask accepts the full range of low profile Force™ 8 filters giving the Force™ 8 a wide ranging flexibility for use in many situations. By selecting and fitting the correct filter, the Force™ 8 Half-Mask can provide protection against particulates, many gases and vapours. JSP Force 8 respirators are reusable; they can be easily stripped, cleaned, maintained and reused for an indefinite period of time. Replacement filters whilst not indefinite, last far longer than single use disposable respirators. JSP recommend 1-3 days for high use, 3-5 days for medium use and 28 days maximum for light use. EN140 For a useful cleaning guide, please refer to the Downloads section.