The CPAP mask strap is made of sturdy, lightweight, breathable soft fiber fabrics for extra softness. Its stretchy and smooth interior surface and stronger nylon sticker straps help hold your CPAP mask in place. Sleep more comfortably with our CPAP supplies headgear. Replacement CPAP ventilator headband can be washed repeatedly and is resistant to fraying, curling, shedding, delaminating, or other forms of degradation. Unhook the nylon sticker straps of your old worn headgear from the CPAP mask, attach the new one in the same way, position the hole at the back of your head, and tighten to secure the F30 full face CPAP mask with headgear. The actual product may have slight color differences due to lighting and display variations, which will not affect use. Color: Gray. Material: Lycra + sponge + raised cloth. Package Contents: 3 x CPAP headgear straps, 6 x clips. Only the items listed are included; other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture to appear slightly different from the real thing. Measurement may vary by +/- 1-3 cm.