We've had two of these covers for over a year now. We put them on the back of our truck and the back of our our travel trailer. We have a vertical bike rack and a horizontal bike rack, and they work well on both. When we are at the campground, they will actually cover three or four bikes. They have a couple of good straps and four interior tensioning strings. I would just add two small bungees to get a good cinch around the circumference.
The cover is the only one I have seen which has zippers and cinch cords which make it easy to install and enables you to zip the bikes and rack entirely inside the cover. It even has an access hole for the hitch. No weather can get in the bag once zipped. Spend the extra money. You will be very happy you did. It will protect and last years longer than the cheaper ones. Get the transportation heavy duty transparent model. This product is in a class by itself. Nothing compares or is even close on design, quality, protection, material.
I wasn't expecting this cover to last as I had it on a bike that was on a rack behind my RV. Went through some crappy weather and it can thru perfectly. I'd definitely buy again.
This cover fit perfectly just as described, it has withheld through the rain and wind and not came off once. I am extremely happy with this cover as I bought two for both bikes. There is a snap to make it tighter and there is a cutout for your lock. If I ever need another one I will definitely be ordering from this company.
I like how it has a huge reflective strip, elasticity around the edges, how the water drip off if it rains. I especially like that I am able to use for my Catrike Villager.
I use for when I park it for the day at work or makes it less noticeable and out of the weather. Also to cover for winter storage.