These headgear clips and buckle from Fisher & Paykel are designed for use with Simplus Full Face CPAP/BiPAP Masks. The clips are used to attach the mask to the lower headgear strap, and the buckle connects the top of the headgear. Two clips and one buckle come in each pack.
In use, these quick release Headgear Clips, are easy to put on and take off. The buckle and both clips are made of soft plastic so they won't break with repeated use.