Extremely useful!
These are very nice lanyards for face masks.  They do their job extremely well, keeping your mask ready to put on, and you can take it off without worry that it will drop, or be misplaced.  They're very comfortable.  The only downside is that the clips are stiff, and difficult to open with my arthritic hands.  I just leave them on the masks when I take them off and wash them by hand, so they stay clean.<br /><br />Thank you very much for reading my review.  I hope you found it helpful.
Rating: 4 stars