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 customer SOFT & 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 stability EASY 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 mask COMPATIBILITY: This replacement headgear is compatible with DreamWear Nasal & Pillow mask WHAT 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