Strap for Nasal Mask: Replacement headgear strap compatible with nasal masks. Size: Standard (MEDIUM). Comfortable: Made of sturdy, lightweight, breathable soft fabric. Features a stretchy, smooth interior surface and durable nylon hook-and-loop straps to securely hold the mask in place for improved comfort during sleep. Durable: Washable and reusable. Resists fraying, curling, shedding, delamination, and other forms of degradation. Convenient: Simply unhook the old headgear straps from the mask and attach the new ones. Position the strap at the back of the head and adjust for a secure fit. Note: This listing includes the replacement headgear strap only. Mask and other accessories are not included. Color: Grey Material: Polyester Package Contents: 1 × Headgear Strap Note: Color may vary slightly due to screen settings and lighting conditions. Measurement tolerance: ±1–3 cm.