Smart, Adjustable Design For a perfect fit, these headband straps are adjustable to fit all head sizes. They ensure there are no air leaks and remain strong without coming loose easily. Optimize this accessory for the best treatment.Ecellent Comfort Created with premium, stretchy, skinfriendly fabric, these headband straps provide comfort. Their soft nature eliminates any rough feeling, making them perfect for sleeping and comfortable to wear in all sleeping positions for patients.Perfect Replacement for F20 These headband straps are specifically designed for your F20, ensuring a peaceful and restful sleep. They provide a comfortable, reliable fit all night long, as an invaluable replacement for patient headbands.Premium Quality and Durability The replacement headbands can be easily cleaned by washing under running water, rinsing and drying naturally. They maintain their quality without fraying, curling, folding, delamination or deteriorating in any other way.Color grayblueMaterial PolyesterPackage contents2 CPAP headbandsOnly the above package contents, other products are not included.Note Light reflection and different displays may cause the color of the item in the picture to be slightly different from the real thing. The measurement allowed error is 13cm.