Need long hair
Unless you have long hair and can wear this stuck above a bun, it is useless. Without it, it will slide down the back of your head where it needs to be to provide relief to the ears. Down on your neck, where it does stay in place, you won't be able to keep a good seal with your mask as the fabric will fold open on the sides. It's just the way the head is shaped, don't look for another strap they will all fail in the same manner. I'd suggest instead that you get the kind of mask that doesn't loop around the ears but has the two horizontal straps that rest one down on the neck and one on top of the head. What this product essentially does is turn your ear loop mask into one of those but with only one strap... Which causes to many fitting issues.
Rating: 2 stars