Dust, dirt, rain and snow will have no effect on your Croozer KID Carrier, thanks to the Storage Cover. And your Croozer will always be clean when you need to use it. Even at those times you happen not to be using your Croozer KID Bike Trailer, it still has to be clean and well maintained ready for the next time you use it. You simply pull the dark grey Storage Cover over your folded up Croozer and its wheels. The Storage Cover protects it fully from dust, dirt and leaves. It‚ s also waterproof, thus preventing rain or dirt from entering your Croozer if you happen to park it outside.