This Window Vent Guard in the Petgear range by Happy Pet, is an essential to have for your dog in the car, especially when it can get very hot inside the car. Dogs require proper ventilation in the car, as the sun is much stronger through the window and they can't reach for their own drink to cool down. Therefore the safety of winding down the window must be checked. The PetGear Window Vent Guard is the perfect way to make sure that your dog remains safely in the car without diving out of the window.