I really wanted to say I love this car cover but unfortunately it is NOT waterproof. It rained the night before and I would like to know that it is not waterproof so I would take it off before it rained last night. My car was flooded the next day due to a totally wet trunk (water stains everywhere after washing it over the weekend). Very disappointed. While it fits my M3 well and keeps out the sun and bird droppings, it didn't keep out the rain. Please correct the error in your description. This car cover is NOT waterproof.