Mask Headgear 2pcs N20/f20 Headgear Compatible With Airfit F20 N20 / Airtouch F20 N20 Big Saving & Great Value: -Name brand headgear straps are overpriced and need to be replaced every few months. The Airfit F20 headgear. Ultra-Comfort Headgears: -Made of premium elastic fabric to ensure its comfort and softness. Fits comfortably to promote an uninterrupted, full night of sleep for you. Super Elasticity: -The super elastic fabric headgear is designed to fit snugly for your head. The split back straps can be widened apart for a looser fit or narrowed together for a tighter fit, the gray side is worn facing out, with the blue side facing in, no rough feeling and comfortable to wear. Durable to Use: -Our headgear straps are great soft and flexible pull-resistant, it is made of premium nylon to ensure long time use, enough material provide extra durability, and with the 2 magnetic clips. Easy to Care: -Our straps is easy to wash by using the mild soap, rinsed well, and allowed to dry weekly. Do not wash the headgear in a washing machine or dishwasher and headgear should be replaced every 3-6 months to ensure the fit and seal is just right with each use.