Headgear for Mojo SleepMask Full Face Mask. The SleepNet Full Face Mask, designed using strong, durable and medically approved materials, will easily withstand the rigors of lab or home use. Best of all, the outstanding features and comfort of the Mojo sleep mask will meet the needs and demands of both patients and technicians. The Mojo is compatible with all Positive Airway Pressure devices. LATEX FREE. U.S. federal law restricts this device to sale by or on the order of a physician.