I have one of these It's not supposed to be used for outdoors but you can. I got a car cover to put on so the paint doesn't get marked up and then put a tarp over the bag. The tarp helps keep the sun from damaging the bag. You can buy moisture absorbing things from them to keep the moisture out or buy a few damp rids and put them in there. I have been looking for a decent outdoor 100% water proof bag but it doesn't exist. Someone should make one that doesn't cost $500+.