The CPAP mask strap is made of sturdy, lightweight, breathable soft fiber fabrics for extra softness. Its stretchy and smooth interior surface and durable nylon hook-and-loop straps help hold your CPAP mask securely in place. Sleep more comfortably with our CPAP headgear supplies. This replacement CPAP headband is washable and designed to resist fraying, curling, shedding, delaminating, and other forms of degradation. To replace, unhook the nylon hook-and-loop straps of your old headgear from the CPAP mask, attach the new headgear in the same manner, position the strap at the back of your head, and tighten to secure the full face CPAP mask. Note: The actual product may have a slight color variation due to lighting and display differences, which does not affect functionality. Color: Gray Material: Lycra + sponge + raised cloth Package Contents: 3 x CPAP headgear straps 6 x Clips Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the actual product. Measurement may vary by +/- 1-3 cm.