The new QuickLatch® Flex air purifying half-mask respirator from AOSafety fits all face sizes and shapes while providing superb comfort and allowing for quick breaks with its patented latch system. QuickLatch Flex utilizes AOSafety 8000 Series bayonet style cartridges and filters and is available in medical-grade silicone and simulated silicone (Sim-U-Sil™).AOSafety, Indianapolis, IN.