The CPAP mask strap is made of sturdy, breathable soft fiber fabrics for extra softness. Its stretchy and smooth interior, along with reinforced nylon hook-and-loop straps, helps keep your CPAP mask securely in place. Enjoy more comfortable sleep with our CPAP headgear replacement supplies. The replacement CPAP ventilator headband is washable and designed to resist fraying, curling, shedding, delaminating, and other forms of degradation. Unhook the nylon straps from your old headgear, attach the new one in the same manner, position the back strap over your head, and adjust for a secure fit to hold the F30 full face CPAP mask in place. The actual product may have slight color variations due to lighting and display differences, which do not affect functionality. Color: Gray. Material: Fabric with sponge and raised cloth. Package Contents: 3 x CPAP headgear straps, 6 x clips. Only the items listed are included; other products are not part of this package. Note: Light reflection and different displays may cause slight color differences between the image and the actual item. Measurement may vary by +/- 1-3 cm.