I purchased them for my 75 year old mother, who had a sudden autoimmune issue in her brain that affected her balance, vision, ability to eat and made her hearing Very painfully acute. To the point she would vomit, or pass out. I had them sent to her for an early Christmas gift! Since then she fell and broke 3 ribs, sprained her shoulder and ended up with pneumonia. She is a trooper and is recovering from the fall, but in the chaos, my 83 year old Dad admitted he thinks he threw away the package by accident, BEFORE SHE EVER SAW THEM!!! They were embarrassed to tell me! He feels terrible! We have all searched EVERYWHERE! So, I ordered a pair for ME now, as I have developed similar issues. I am excited to try them, and hope to be able to order my mom a replacement Christmas gift soon!