We often have two dogs in the car, also also two of the larger varieties. The grid is look good use, and prevents the access to the vehicle and also that, for example, the dog tries his mouth or paw through the open window to stretch out. The grid is stable and strong, - but made of plastic (Albeit a good plastic). Without dogs in the car, or even if the dog is friendly to everyone ONLY, you have to remember that it the grid is possible to destroy with violence and to allow in this way to enter the vehicle. With us it's no problem - if someone is trying Himself to blame. But that is not true of all dogs to, and has to be considered accordingly.
But by me a strong buy recommendation, as it is a very good "Conditioning" effect on warmer days, and even on cooler Days the windows from misting inside prevented when Dogs in the vehicle. Recommended and 5 stars for it.