Workers can customize their respiratory protection system by choosing the headtop. With the option to customize, workers can design a respiratory system that meets their specific needs. Choosing this assembly allows the worker to make specific choices about which headtop to add to the respiratory protection system. Workers enjoy exceptional versatility in designing a system that is customized to the work environment. Versaflo™ 7100098537, Series: TR-600, Universal Size, Integrated Suspension, Belt Mounting, Standard Capacity Rechargeable Lithium-Ion Battery, Specifications Met: NIOSH Approved, Gray/Magenta