Standard ResMed Mirage FX Nasal Cpap Mask System 62103 with Headgear. The Mirage FX is incredibly streamlined and lightweight (less than 2.5 ounces with headgear)! The mask's frame is strong enough to stabilize the mask, yet soft enough to accommodate movement during sleep. The mask's Spring Air cushion is coated with soft-touch frosting to improve comfort; and SoftEdge headgear straps are flexible and breathable with rounded, seamless edges to reduce strap marks.