Sebastian has never been in the car without it. It hooks to seat belt and has a loop/clip that clips to his harness (remember tiny dogs should always use a harness - not a collar). We purchased, and monogramming is available from Solutions catalog (
www.solutions.com) but I notice that my favorite small dog online store also has them with monogram - G. W. Little(
www.gwlittle.com). Good luck on the road trip - I see lots of replies about other seats - but we love the Lookout. You can, however, get the larger model made for two dogs if you wish - or two seats to keep them separated.