breathable, absorb sweat, , double stitching creating a smoother interior that is less likely to cause irritations or abrasions to the skin. APPLICABLE MODEL: Replacement headgear for F30i full face CPAP mask. It can be adjusted to suit your needs, meaning it will hold your mask in place,helping to reduce air leaks around the edge of your CPAP breathing mask. CLEANING:Hand wash weekly using hot water and other mild soap,then rinse well and air dry. Colour:Gray Material:+sponge+raised cloth The actual product may have slight color difference or difference, which will not affect the use Package Contents: 1 x CPAP headgear strap Only the above package content, other products are not included. Note: Light reflection and different displays may cause the color of the item in the picture a little different from the real thing. The measurement allowed error is +/- 1-3cm.