The hip bag features an EVA-protected compartment that holds your InogenOne G4 POC firmly in place and helps protect it from accidental bumps. Special mesh venting assists in keeping the unit cool while operating; and a protective display shield provides protection from dirt and moisture, while allowing easy access to the cannula and controls. Finally the hip bag includes a sturdy thermoformed belt that provides padded comfort and stability and allows a greater sense of mobility without the fear of damaging the device. The adjustable waist belt fits a minimum waist circumference of 31 inches and a maximum of 58 inches.