This hitch cover is a great design. It is lightweight and easily fits over two bikes. I had no problem getting it on and getting the straps secured following the instructions. I even got it to cover three with the handlebars folded in line with the frames. In terms of basic function, it kept road dirt and most moisture off of the bikes, and to its credit, survived a five week, 8,500 road trip on the back of our motorhome with only a couple of duct tape patches.The downside is that the fabric is thin and with use gradually stretches out. While this helps to make it easy to cover the bikes, it's also a problem as the waterproofing appears to be sprayed onto the inside of the fabric. As the cover stretches, the waterproofing loses its integrity, so rain and roadspray can get in. In fact, on several occasions after driving in the rain, I found water pooled in the bottom of the cover. There are drain holes on the bottom, but these seemed to rarely align with the low point due to the straps.I think the key to longevity with this cover are two fold. First, only cover two bikes maximum to reduce any stretching. Second, don't cinch the straps down very tight for the same reason. If you're not headed out on a five week road trip, this should prove to be a useful, lightweight cover for a reasonable time period. Overstock.com had the lowest price on this item of the several that I checked in early June.