I live in South Florida. It rains. Sometimes a lot. Car is also parked under trees, so leaves, tree sap and bird droppings are a regular thing, all year round. This car cover has checked every box. It's waterproof, sap proof (other, cheaper covers, the sap leaked through onto the car), and has attached straps to wrap around the bumper in case of wind. This is a great cover, I've owned several in my time but this one is by far the nicest. It is doing a great job at protecting my car, its water resistant, sun resistant but it breaths.