I purchased this because I
"I purchased this because I was getting a new Rx and needed the PTX insert so I wouldn't be without my current one while have the RX put into it and I figured this would be a good time to get a new sunglass shield since the other one is pretty old and has some scratches on it. I've been wearing Saber's for quite a while and had the previous version before the Advanced replaced them. I like them and they fit me well. They work for all my activities, driving, shooting, woodworking, etc. I like that all the shields came in one nice kit when purchased that way but can be replaced one at a time if needed"