Mask clips are essential to the functionality of a CPAP mask. CPAP mask clips are designed to connect the headgear to the base of a CPAP mask. Typically masks are equip with two mask clips located at the top, near the temple area of the head also two mask clips located at the bottom, near the the jaw line to secure mask fit. Mask clips make taking off and putting on CPAP masks simple and easy. Do not worry about adjusting Velcro straps nightly, instead adjust straps on the initial use, and when removing mask undo mask clips instead of Velcro.