The Clemco Apollo 600 Series Supplied-Air Respirators are hallmarks of safety, comfort, and performance. Recognizable by their bright red-orange color, Apollo 600 Respirators are easily visible on the job site. Their wide-span window offers the wearer a commanding view of the work surface and broad-scope peripheral vision. The 600 has new features making it comfortable to wear, easier to maintain, and more durable, promising a long service life. The adjustable web suspension fits head sizes 6.5 to 8. Adjustable chin strap holds the helmet in position on the operator's head.