It seems like this cover was made for another helmet model. That aside, it does actually fit over pretty well. It just doesn't really fit well enough. The image gets to show this problem too.
Do know that this problem is not severe enough to omit this from your purchase. A helmet needs a cover.
Other then a low rating, as a product this is of the same quality of any item found here, and that is outstandingly good in its simplicity. The sewns are strong and the material is of the same durable camouflaging used for most products on this website.