Missy, please do a test run in a safe area before you take Boomer out in public in that carrier. I have gone through TWO of that exact same model and returned both. The top zippers come apart VERY EASILY. They are plastic and just snap apart. Mishi almost escaped into the street one day when I was taking him to the vet - I was shocked to see his little head peeking through the top as I walked to the vet's office. The second one (I exchanged the first one for another) I decided not to use the top zippers at all, but it didn't matter. Just the weight and the movement of carrying a cat in it made the zipper pop open and no one was able to zip it up again.

The manufacturer never got back to me about the poorly functional carrier but Future Pets was nice enough to take it back again. I was able to exchange it for a really nice, albeit very expensive, Sherpa model. Future Pets had them on sale. It was pricey, but the safety of my cats is priceless to me. Good luck!