My SIS roller bag cover is legit. Not only does it cover and have straps to keep it from coming off, it has 2 zip flaps and a strap handle. One zipper flap is for the telescoping handle, and the other is on top to access the top part of your bag. This cover kept my stuff together and protected. I will be using this for a rain cover as well. Stoked with this purchase and the price. It's a great way to protect your investments inside and outside.