Compatibility: This replacement headgear is compatible with for silicone/gel nasal & pillow mask with arms. The headgear with silicone arms also replace for /P30i Headgear. Comfortable: Our gel nasal pillow headgear is made of soft breathable material which makes it more stable and more comfortable for wearing on skin, the straps are perfectly bonded which greatly improves the stability. Adjustable: The head strap fit for has Nylon Sticker at that can be adjusted to the right length to offers a secure fit, reducing air leaks around the edge of your breathing mask. Washable: Hand wash the replaced head wear strap with warm water and mild soap, then air dry, avoiding machine washing to , it is recommended to replace the nasal mask strap every 6 months. 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. Color:Gray & White Material:plastic Package Contents: 1 * Replacement Headgear Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.