The 3 parts are easy to assemble for immediate use.
Features and Benefits: Lightweight and comfortable ErgoForm Headgear Easy-Clip Frame for easy assembly Advanced, minimal design Minimal Frame And Lightweight Seal The Easy-Clip frame is a simple lock that holds the soft cushion in place. What's Included: The F&P Simplus CPAP Mask comes with a frame, headgear, and cushion to provide a simple, yet effective design to maximize comfort and efficiency.