Best for most dogs, most of the time
K9 Sport Sack Air Plus 2
The forward-facing carrier the category is built around, with mesh side panels and a storage compartment that makes it a usable daypack too.
This is the model most people should look at first, because it solves the problem the cheap carriers do not: where the dog's legs go. In a plain tote-style pet backpack the dog is folded into a box. Here the legs pass through openings, the dog sits more or less as a dog sits, and it can shift its weight.
Size it by measuring the dog rather than by its weight class. Length from chest to tail base and chest girth both matter, and a dog at the top of one size and the bottom of the next should usually go smaller, because a loose carrier lets the dog slide and swing. Get the dog used to the carrier at home, on the floor, with treats, before the first time you put it on your back -- most carrier refusals are training problems, not product problems. See <a href="/trail-dog/dog-backpack-vs-carrier">dog backpack vs carrier</a> for whether you want this at all.
Specs
- Forward-facing design with the dog's legs through dedicated openings
- Breathable mesh side panels
- Multi-compartment storage pack on the back
- Sized by dog length and girth rather than weight alone
Good for
- Legs hang through proper openings rather than being folded under the dog, which is the single biggest comfort difference between carriers
- The storage pack means you are not also carrying a second bag for water, bowls and waste bags
- Forward-facing position puts the dog's weight close to your back, where a load should be
Bad at
- You cannot see the dog while walking, so you are checking by feel and by sound
- No hip belt on this model, so the weight sits on your shoulders
- Sizing is unforgiving -- an undersized carrier bunches the dog's shoulders and an oversized one lets it slide
