Strap for Nasal Mask: Replacement strap compatible with Wisp Nasal CPAP Mask. Size: Standard (MEDIUM). Comfortable: Made of sturdy, lightweight, breathable soft fiber fabrics, offering extra softness. The stretchy and smooth interior surface, along with reinforced nylon straps, helps hold your mask securely in place. Enjoy better sleep with this comfortable headgear. Durable: Designed to withstand repeated washing. Resists fraying, curling, shedding, delaminating, and other forms of degradation. Convenient: Simply unhook the nylon straps from your old Wisp headgear and attach the new one in the same manner. Position the back strap at the base of your head and adjust for a secure fit. Please Note: This package includes the CPAP headgear strap only. The mask and other accessories are not included. Color: Grey Material: Polyester Package Contents: 1 x CPAP Headgear Strap Note: Light reflection and different display settings may cause slight variations in color between the image and the actual item. Measurement may vary by +/- 1-3 cm.