The Ambu Mark III is designed for the manual resuscitation of adults and children in toxic atmospheres (fire, chemical spills, etc). Not made with natural rubber latex, reusable, and constructed with a butyl outer cover with a gas filter. The Mark III can be repeatedly autoclaved at 134º C (except the face mask). Includes a size 5 face mask, canister, filter, cover, extension tube, carry case, and a built-in pressure limiter of approximately 70cm H2O.