Respironics is really an American medical supply firm that specializes in products that boost respiratory capabilities. Comfort: This backpack has padded, adjustable straps, padded back for elevated comfort although sporting, this backpack delivers security and security for your o2 machine, when also delivering the mesh your device must breathe adequately. https://back-support-belt88764.isblog.net/not-known-facts-about-oxygen-concentrator-dangers-33692814