Not sure which 2004 Porsche Boxster Outdoor Car Covers are right for you? We have over 206 customer reviews, with an average rating of 4.5, to help you find exactly what you're looking for. Phillip W from Washington, DC said, "My previous Weathershield HD cover developed problems after only 2 years (has a 5 year guarantee). Before the HD, I had an HP cover. It lasted longer than the more expensive HD. I have returned the HD cover for repairs, but bought an HP cover to keep the car covered during the repair process. The HD cover is heavier duty, but if it doesn't last, it is not worth the extra money. Both covers were an excellent fit. Both the same color (gray), but the cheaper HP cover lasts longer."