Review on Action Mount Wearable Chest Harness: Universal Phone Mount for Hands-Free Recording and Sports Camera Attachment by Daniel Ton

This is the first time I am writing a 'negative/poor' review for Revain. This product has a major defect/design flaw. Even if you tighten the part that holds the phone in place, it won't hold the phone in place because the part that holds the phone is made of hard plastic and has no 'hook'. The problem is that the phone is easy (VERY EASY!) to slip out. I've tried it for my iPhone 11 both with and without a case (and made it as snug as I could each time). I think if you have a really soft phone case, the grip with the spring part will still hold the phone firmly. But if you have anything other than a very soft case (or if you don't use a case) the phone will quickly slip out, especially because the phone is held upright when you put it on a backpack strap so it just slips through the part, who holds it. If they did it with a softer grip rubber it would probably work great. But in its current form it is (unfortunately) completely useless.