Full face nasal headgear is the headgear that is used to hold a full face or nasal mask to your face. It should keep the mask from sliding around and should help maintain a full seal to prevent leaks while remaining comfortable. Most full face or nasal headgear are made with an open cell poly neoprene material, which makes them breathable, soft, and slightly stretchy. This headgear attaches to the mask at four different points and wraps around the back of the head. This headgear come in various sizes and are adjustable with Velcro. It should fit comfortably while still maintaining a steady hold on your mask. If you have to tighten it to an uncomfortable degree to maintain the seal of your mask or if it starts to deteriorate, then your headgear should be replaced. This may happen approximately every eight to fourteen months. To get the most out of your headgear, you should wash it by hand with warm soapy water or in the washing machine. ------------------------------------------------------------------------------- Features 1.For all brands of cpap mask use, such as Philips,ResMed,Resmart,Kaidi Tai, etc; 2.The headgear features no stitching, creating a smoother interior surface that is less likely to cause irritations or abrasions to the skin; 3.This durable headgear can be washed repeatedly without fraying, curling, shedding, or other forms of degradation; 4.Fixing the mask to ensure better treatment, the patient's cpap mask. effective absorption of the ventilator to provide air quality; 5.Breathable, absorb sweat, durable, allergy free, tasteless, long service life, will not delaminating. ------------------------------------------------------------------------------- Packing List 2x Headgear Strap (WITHOUT MASK).