3-Pack Headgear for N20 Mask: The N20 headgear is a replacement strap compatible with for Resmed N20 nasal cpap mask. Size: Standard (Medium) Comfortable: Made of sturdy, lightweight, breathable soft fiber fabrics, the N20 headgear boasts extra softness. Its stretchy and smooth interior surface, along with stronger Nylon buckle straps will hold your mask in place. Enjoy better sleep with our headgear Durable: Our replacement CPAP ventilator headband can be washed repeatedly. Don't need to worry about for N20 cpap supplies' fraying, curling, shedding, delaminating, or other forms of degradation Convenient: Unhook the Nylon buckle straps of your old worn headgear from the N20 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 Please Note: The straps for Airfit N20 medium include replacement for cpap headgear ONLY. Mask and other accessories are not included Model Number: Mask Headgear Colour:Blue&Gray Material:Polyester Size:Medium Package Contents: 3 x CPAP Headgear(without buckle) 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.