The Breezer Window is a truck rear window that offers a huge opening compared to a standard slider window. And there are no bars in the middle of your rear view either. The Breezer's patented latch system is much more secure than a slider window latch. And the weatherproof "Venturi Seal" design keeps the water outside where it belongs. The Breezer window itself can be dropped down into it's compartment behind the seat, or completely popped out and removed. Just like a sunroof!