Handy tool for better functioning of the mask. Prevents the elastics from becoming slack. Ensures that the mask stays tight against the face all day long. The clip has multiple positions depending on the size of the skull. Provides a better closure so better protection. The holder is made of bioplastic (sugar cane). Handy for the healthcare sector and for people who often wear a face mask. Not suitable for children and only to be used for keeping the face mask in place.