4Pcs Adjustable Mask Fixer for Medical Face Mask Compatible with All Masks,Non-Slip Design Mask Adjuster,Prevent Ear Pain from Long-time Wear…

These fasteners are ok. Only drawback is when putting mask on or taking it off, these are plastic so the pop right off. I thought they were rubber which can stretch.

DO NOT RECOMMEND DOES NOT GIVE YOU ENOUGH NOTCHES TO ADJUST TO FIT COMFORTABLE AND SECURE, THE NOTCHES LEAVES THE MASK LOOSE AND UNCOMFORTABLE FIT.

These work great. Wearing an ear-loop mask was making my ears hurt. Started using these and the pain is gone.

Don't waste your time or money its hard to clip your mask and it doesn't stay attached

This is a terrible product. I don't know if it was only designed for use with those cheap little blue face masks (for which it may work, I don't know). It simply will not hold for a cloth face mask. It keeps falling off. Very disappointed.

I couldn’t get these to work with my masks.

Love how the mask adjusters keep straps off of my ears. Also makes it easy to pull mask up and down while entering and exiting buildings. I wear my mask 7-8hrs a day and love how the adjusters feel.

It's OK, but it always falls down, or it hurts to strangle your ears