YOUR SATISFACTION IS GUARANTEED: If you have any problem in using, please at any time. We'll provide you with a pleasant shopping experience and friendly customerSOFT & COMFORTABLE: Our headgear Strap is made of sturdy, lightweight, breathable soft fiber fabrics which makes it more stable and more comfortable for wearing on skin, Its stretchy and smooth interior surface, along with stronger hook and loop fasteners straps will hold your mask in place which greatly improves the stabilityEASY TO USE: Unhook the hook and loop fasteners straps of your old headgear from the mask, put the new one on in the same way, position the hole in the back of your head and tighten to keep the mask in place. It can be adjusted to the right length to offers a secure fit, reducing air leaks around the edge of your breathing maskCOMPATIBILITY: This replacement headgear is compatible with DreamWear Nasal & Pillow maskWHAT YOU'LL GET: Each pack comes with one adjustable strap and one pair arms, the arms of the headband are divided into left and right, so please pay attention to the distinction. The straps for nasal mask include replacement headgear only NOT included Mask and other accessories