Molded from elastomeric rubber provides comfort and durability. Low maintenance/Limited use 400 series can be used up to 30 times. Fit over 99.9% of wearers.. Suitable For: Toxic dusts, mists & fumes; lead dusts & fumes; brake dusts; exotic welding; glass fibers; asbestos (Note: Specific limitations apply for asbestos removal, see OSHA 1910.1001). Display Bag