Check the listing for details. For Resmed Airfit F20 Replacement CPAP Mask Headgear (Large) 1 Pack Fast Ship. Condition: New with box. Listed at 10.79 USD. eBay About this Item: Superior Elasticity and Premium Softness: Crafted from high-quality, ultra-soft elastic Nylon fabric, our headgear strap offers exceptional stretch and flexibility for a secure and comfortable fit throughout the night. Experience unmatched comfort with its premium-quality, ultra-soft fabric that is gentle on the skin and prevents discomfort. Enjoy secure and comfortable:Upgrade your experience with our Headgear Strap for F20 - the perfect solution for secure and comfortable fixation during sleep. Biocompatibility Tested for Your Peace of Mind: We have conducted rigorous testing to ensure that our headgear strap is safe. With our strap, you can sleep with confidence, knowing that it meets high standards of safety and quality. Durable and cost-effective: Our alternative headbands provide economically durable products with their high-quality materials. Easy Maintenance and Long-lasting Performance: Cleaning and maintaining our headgear strap is a breeze. Simply hand-wash it regularly with mild soap, rinse with warm water, and let it air dry. With proper care, the strap will maintain its elasticity and performance, ensuring a reliable and comfortable fit for your F20mask.