These are two of my all-time favorite things for pet travel! I keep these backpack carriers in my car because you never know when you may need or want to put your dog in one. Sometimes you may arrive at your destination and it is super crowded, perhaps you’re on vacation and will be using public transportation, or maybe you’ll be walking in the midday sun in Savannah in July and you don’t want your dog’s feet to burn - this backpack is the solution for all of those! We use the trainer for short quick outings, and the Knavigate for longer piggyback rides. The Knavigate has a soft frame to help with support. I purchased mine one size too big and bought the step to go in the bottom for added support. LTKGiftGuide LTKActive LTKTravel