3-Pack Headgear for N20 Mask: This headgear is a replacement strap compatible with the ResMed N20 nasal CPAP mask. Size: Standard (Medium) Comfortable: Made of sturdy, lightweight, breathable soft fiber fabrics, the headgear offers extra softness. Its stretchy and smooth interior surface, along with strong nylon buckle straps, helps hold your mask securely in place. Enjoy better sleep with this comfortable headgear. Durable: The replacement CPAP headband is washable and designed to resist fraying, curling, shedding, delaminating, and other forms of degradation. Convenient: Simply unhook the nylon buckle straps from your old headgear, attach the new one in the same manner, position the back strap at the back of your head, and tighten for a secure fit. Please Note: This package includes replacement headgear only. The 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) Note: Light reflection and different display settings may cause slight color variations between the image and the actual item. Measurement may vary by +/- 1-3 cm.