This replacement headgear is compatible with the AirFit P10 nasal pillow mask. The split-back elastic design distributes tension evenly across the back of your head, keeping the nasal pillows seated gently without over-tightening. Slip-on loops attach directly to the P10 frame arms — no clips or velcro needed. When the original strap loses its stretch, this 2-pack gives you a fresh set at a great value.