Great product - really helped in getting our dog to lie down in the back of the car. We were worried there wouldn’t be an opening through the bottom / back of the cover to allow us to still anchor him to the car seat belt however, there is enough of a gap where the zipper has been sewn in for us to push his seat belt through and secure him safely. We bought the large size and it’s ample big enough for our Miniature Schnauzer.
I haven't used this yet but it is very easy to attach to the front seat of the car and I'm sure it will be perfect for my pups when going on short journeys . It doesn't come with a dog harness so I would suggest buying this too