not for me, but could be great for someone who has to keep a mask on all day
The silicone is very comfortable.  I just take my mask off too many times during the day to have to worry about this extra piece. If you don't have the luxury of working in an isolated space like me, and keep your mask on for hours at a time this will help.  It keeps the mask from sucking in against your face when you breathe hard.  It washes up easily, too.
Rating: 4 stars