3-Pack Headgear for N20 Mask: Replacement strap compatible with Resmed N20 nasal CPAP mask. Size: Standard (Medium). Comfortable: Made of sturdy, lightweight, breathable soft fiber fabrics, the N20 headgear offers extra softness. Its stretchy and smooth interior surface, along with stronger nylon buckle straps, helps hold your mask securely in place. Enjoy better sleep with this comfortable headgear. Durable: Our replacement CPAP headband can be washed repeatedly without fraying, curling, shedding, delaminating, or other forms of degradation. Convenient: Unhook the nylon buckle straps of your old worn headgear from the N20 mask and attach the new one in the same way. Position the hole at the back of your head and tighten to secure the mask. Please Note: This package includes replacement CPAP headgear ONLY. Mask and other accessories are not included. Model Number: Mask Headgear. Color: Blue & Gray. Material: Polyester. Size: Medium. Package Contents: 3 x CPAP Headgear (without buckle). Only the above package content is included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual item. Measurement may vary by +/- 1-3 cm.