I bought the googles after trying to get my Akita to wear Dogoogles, he hated them. After training him to wear these googles he wore them fine, as soon as he saw the truck start up, he would sit and wait for me to put them on. Parker loved riding with his head out the window, and I think he knew he was being filmed by other motorists. Anyway, we were on a gravel road, when a dump truck heading in the other direction passed us, I heard a pop sound and figured there's a new star in the windshield. When we got home, I checked all over the truck windshield, headlights, and body, I didn't see and damage. That was until I opened the back cab door to let him out, and saw the crack in the google lens. I'm quite sure the he could have possibly lost an eye then and there, I'm glad I believe in eye protection for my pups.