Seems to me to be a bit pricey for what it is. I was surprised to see that the fit wasn't anywhere near tight enough for my 4x32 acog. I had to put a small black zip tie around it to make sure it wouldn't fall off with any minor bump. On the good side it helps you to focus by eliminating any peripheral vision and it never hurts to have a cushy piece of rubber in between your eye and the scope.
Pros: It really helps you to focus on your target by eliminateing any peripheral vision
Cons: cant be used with scope coat. overpriced
This review was written in the old system and had content requirements that are different than reviews written today.