Product Description: AcuCare F1‐4 hospital vented full face mask is part of ResMed’s range of high‐quality disposable patient interfaces. How to use: Use the sizing template on the packaging to determine the correct mask size.Position the mask cushion over the nose and mouth and pull the headgear over the head.While holding the mask against the face, pull each of the side straps back along the side of the face. The straps should pass below the ears.The side arms on the mask should bend back as the straps are tightened.Ingredients:Mask only