It's just a small plastic tab that's very easily breakable. It's a terrible design flaw. Trust me, they offer replacements for a reason. LOL! ___ Machine:ResMed AirSense™ 10 AutoSet™ CPAP Machine with HumidAir™ Heated Humidifier Mask:Simplus Full Face...
Medical Grade Silicone Material Adult CPAP Full Face Mask for Sleep Apnea US$7.61-12.00 200 Pieces (MOQ) Factory Direct Sales Full Face CPAP Mask for Auto Bipap BMC Resmed Respironics Machine with Adjustable Mask Headgear with Beautiful Packaging Bag US$10.938-12.50 1...