Smart, Adjustable Design: These headgear straps are adjustable to suit any head size. They ensure a secure fit with minimal air leaks and remain strong without loosening easily. Optimize this accessory for CPAP therapy. Superior Comfort: Made from high-quality, stretchy, skin-friendly fabric, these headgear straps provide lasting comfort. Their soft texture eliminates pressure points, making them ideal for sleep and comfortable in any sleeping position. Perfect Replacement for ResMed AirFit F20: These headgear straps are specifically designed for the ResMed AirFit F20 mask, ensuring a snug, reliable fit throughout the night. They serve as a dependable replacement for original headgear straps. Premium Quality and Durability: The replacement headbands can be easily cleaned by rinsing under running water and air-drying. They retain their shape and integrity without fraying, curling, shedding, delaminating, or degrading. Color: Gray + Blue Material: Polyester Package Contents: 2 x CPAP Headgear Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.