The Scott ACSi SCBA features the innovative Advanced Carrying System (ACS), which features a padded Thermoflex backplate molded to fit the spine and back muscles for increased comfort and flexibility. The ACSi SCBA features a reliable two-stage pneumatic system consisting of a first stage pressure reducer coupled with the Scott E-Z Flo mask mounted regulator. Finally, the ACSi SCBA enables quick-turn-around and decon with pneumatics that can be removed from the back-plate with a simple Scott "quarter-turn", no tools required.