The advanced design of the Advantage® 200 LS Respirator the first half-mask developed exclusively for people who wear respirators provides protection from contaminants, a comfortable fit and an economical price. The mask incorporates the proven Advantage face seal with MSAs patented MultiFlex® System for a virtually customized fit. Plus, the highly effective AnthroCurve™ Sealing Surface instantly conforms to each wearer, equalizing pressure on the face seal area and eliminating annoying pressure points. And, the Advantage 200s simple, efficient design makes it very cost effective. With only four components the face piece, four-point yoke, inhalation/exhalation valves and head harness theres never an inventory or maintenance cost problem. Choose your cartridge listed by the order quantity option. Cartridges are extra - prices are listed at the bottom of this page. Respiratory Protection Chart - Differences between cartridges