Description
Lightweight, sweat absorbable, air permeable, allergy free, perfect fit, max comfort, wraparound design, adjustable straps, etc..Compatible with most m-a-s-k as long as they are of the 4 point connection type..Smoother interior surface that is less likely to cause irritations or abrasions to the skin..Unhook your old headgear, put the new one one the same way, position the hole in the back of your head and tighten to keep in place..The head strap belongs to consumable products, for your comfortableness and heath, it is recommended to replace the headgear after 3-6 months of use.