Remarkably comfortable with soft, lightweight facepiece and easy-to-adjust headstraps. Swept back design of the filters/cartridge improves balance and visibility. Like the 6000 Series Half Facepiece Respirators, this respirator can be disassembled, cleaned and reused. This respirator can also be used as a dual airline respirator system. (Ask your Colony representative for more details). Designed to be used with 2000, 5000 and 6000 Series 3M cartridges, filters, adapters and retainers.