Wish I had a better photo, but I attached the Pet Palace using the four d-rings on the bottom of the bag and two of the straps provided with the pack. I criss-crossed the straps under the Rivco rack attaching the front of one side to the back of the other. In the photo you can see the strap going thru the opening in the side of the rack on its way to the rear d-ring on the other side. Never had a problem with the pack not being secure. I hope this makes sense because we traded our old bike on a 2020 RT and I have a different rack now.