Airvida 1.5 ATA Seated Hyperbaric Therapy ChamberThe Airvida Pro90 Sitting Hyperbaric Chamber is a portable and flexible hyperbaric chamber that enables you to sit or recline during your HBOT therapy. The Airvida Pro90 Portable Sitting Hyperbaric Chamber provides a very roomy space inside also accommodates one adult and one child to stay together. Portable Seated Hyperbaric Chambers Designed for People to Sit or Recline Inside Also Available for Full Recumbent Position 1. 4 ATA or 1. 5 ATA Working